diff --git a/Cargo.lock b/Cargo.lock
index bbc8288..d9d4f69 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -28,6 +28,152 @@ dependencies = [
  "password-hash",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+
+[[package]]
+name = "async-channel"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2114d64672151c0c5eaa5e131ec84a74f06e1e559830dabba01ca30605d66319"
+dependencies = [
+ "concurrent-queue",
+ "event-listener",
+ "futures-core",
+]
+
+[[package]]
+name = "async-executor"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "871f9bb5e0a22eeb7e8cf16641feb87c9dc67032ccf8ff49e772eb9941d3a965"
+dependencies = [
+ "async-task",
+ "concurrent-queue",
+ "fastrand",
+ "futures-lite",
+ "once_cell",
+ "slab",
+]
+
+[[package]]
+name = "async-fs"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b3ca4f8ff117c37c278a2f7415ce9be55560b846b5bc4412aaa5d29c1c3dae2"
+dependencies = [
+ "async-lock",
+ "blocking",
+ "futures-lite",
+]
+
+[[package]]
+name = "async-global-executor"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd8b508d585e01084059b60f06ade4cb7415cd2e4084b71dd1cb44e7d3fb9880"
+dependencies = [
+ "async-channel",
+ "async-executor",
+ "async-io",
+ "async-lock",
+ "blocking",
+ "futures-lite",
+ "once_cell",
+]
+
+[[package]]
+name = "async-io"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5e18f61464ae81cde0a23e713ae8fd299580c54d697a35820cfd0625b8b0e07"
+dependencies = [
+ "concurrent-queue",
+ "futures-lite",
+ "libc",
+ "log",
+ "once_cell",
+ "parking",
+ "polling",
+ "slab",
+ "socket2",
+ "waker-fn",
+ "winapi",
+]
+
+[[package]]
+name = "async-lock"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e97a171d191782fba31bb902b14ad94e24a68145032b7eedf871ab0bc0d077b6"
+dependencies = [
+ "event-listener",
+]
+
+[[package]]
+name = "async-net"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5373304df79b9b4395068fb080369ec7178608827306ce4d081cba51cac551df"
+dependencies = [
+ "async-io",
+ "blocking",
+ "futures-lite",
+]
+
+[[package]]
+name = "async-process"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf2c06e30a24e8c78a3987d07f0930edf76ef35e027e7bdb063fccafdad1f60c"
+dependencies = [
+ "async-io",
+ "blocking",
+ "cfg-if",
+ "event-listener",
+ "futures-lite",
+ "libc",
+ "once_cell",
+ "signal-hook",
+ "winapi",
+]
+
+[[package]]
+name = "async-std"
+version = "1.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52580991739c5cdb36cde8b2a516371c0a3b70dda36d916cc08b82372916808c"
+dependencies = [
+ "async-channel",
+ "async-global-executor",
+ "async-io",
+ "async-lock",
+ "crossbeam-utils",
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-lite",
+ "gloo-timers",
+ "kv-log-macro",
+ "log",
+ "memchr",
+ "num_cpus",
+ "once_cell",
+ "pin-project-lite 0.2.9",
+ "pin-utils",
+ "slab",
+ "wasm-bindgen-futures",
+]
+
+[[package]]
+name = "async-task"
+version = "4.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30696a84d817107fc028e049980e09d5e140e8da8f1caeb17e8e950658a3cea9"
+
 [[package]]
 name = "async-trait"
 version = "0.1.53"
@@ -39,6 +185,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "atomic-waker"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "065374052e7df7ee4047b1160cca5e1467a12351a40b3da123c870ba0b8eda2a"
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -50,6 +202,40 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "auto_enums"
+version = "0.7.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe0dfe45d75158751e195799f47ea02e81f570aa24bc5ef999cdd9e888c4b5c3"
+dependencies = [
+ "auto_enums_core",
+ "auto_enums_derive",
+]
+
+[[package]]
+name = "auto_enums_core"
+version = "0.7.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da47c46001293a2c4b744d731958be22cff408a2ab76e2279328f9713b1267b4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "auto_enums_derive"
+version = "0.7.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41aed1da83ecdc799503b7cb94da1b45a34d72b49caf40a61d9cf5b88ec07cfd"
+dependencies = [
+ "autocfg",
+ "derive_utils",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -83,6 +269,18 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "bitvec"
+version = "0.19.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55f93d0ef3363c364d5976646a38f04cf67cfe1d4c8d160cdea02cab2c116b33"
+dependencies = [
+ "funty",
+ "radium",
+ "tap",
+ "wyz",
+]
+
 [[package]]
 name = "blake2"
 version = "0.10.4"
@@ -110,6 +308,26 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "blocking"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c6ccb65d468978a086b69884437ded69a90faab3bbe6e67f242173ea728acccc"
+dependencies = [
+ "async-channel",
+ "async-task",
+ "atomic-waker",
+ "fastrand",
+ "futures-lite",
+ "once_cell",
+]
+
+[[package]]
+name = "bumpalo"
+version = "3.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a45a46ab1f2412e53d3a0ade76ffad2025804294569aae387231a0cd6e0899"
+
 [[package]]
 name = "byteorder"
 version = "1.4.3"
@@ -122,6 +340,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
+[[package]]
+name = "cache-padded"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1db59621ec70f09c5e9b597b220c7a2b43611f4710dc03ceb8748637775692c"
+
 [[package]]
 name = "cc"
 version = "1.0.73"
@@ -147,6 +371,7 @@ dependencies = [
  "num-integer",
  "num-traits",
  "serde",
+ "time",
  "winapi",
 ]
 
@@ -189,6 +414,15 @@ dependencies = [
  "os_str_bytes",
 ]
 
+[[package]]
+name = "concurrent-queue"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30ed07550be01594c6026cff2a1d7fe9c8f683caa798e12b68694ac9e88286a3"
+dependencies = [
+ "cache-padded",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.3"
@@ -223,6 +457,16 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bf124c720b7686e3c2663cf54062ab0f68a88af2fb6a030e87e30bf721fcb38"
+dependencies = [
+ "cfg-if",
+ "lazy_static",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.1.3"
@@ -243,6 +487,27 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "ctor"
+version = "0.1.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f877be4f7c9f246b183111634f75baa039715e3f46ce860677d3b19a69fb229c"
+dependencies = [
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "derive_utils"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "532b4c15dccee12c7044f1fcad956e98410860b22231e44a3b827464797ca7bf"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "digest"
 version = "0.9.0"
@@ -284,6 +549,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "duplexify"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1cc346cd6db38ceab2d33f59b26024c3ddb8e75f047c6cafbcbc016ea8065d5"
+dependencies = [
+ "async-std",
+ "pin-project-lite 0.1.12",
+]
+
 [[package]]
 name = "ed25519"
 version = "1.5.2"
@@ -312,6 +587,12 @@ dependencies = [
  "termcolor",
 ]
 
+[[package]]
+name = "event-listener"
+version = "2.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77f3309417938f28bf8228fcff79a4a37103981e3e186d2ccd19c74b38f4eb71"
+
 [[package]]
 name = "fastrand"
 version = "1.7.0"
@@ -352,6 +633,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "funty"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
+
 [[package]]
 name = "futures"
 version = "0.3.21"
@@ -400,6 +687,21 @@ version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
 
+[[package]]
+name = "futures-lite"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7694489acd39452c77daa48516b894c153f192c3578d5a839b62c58099fcbf48"
+dependencies = [
+ "fastrand",
+ "futures-core",
+ "futures-io",
+ "memchr",
+ "parking",
+ "pin-project-lite 0.2.9",
+ "waker-fn",
+]
+
 [[package]]
 name = "futures-macro"
 version = "0.3.21"
@@ -436,7 +738,7 @@ dependencies = [
  "futures-sink",
  "futures-task",
  "memchr",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "pin-utils",
  "slab",
 ]
@@ -462,6 +764,18 @@ dependencies = [
  "wasi 0.10.2+wasi-snapshot-preview1",
 ]
 
+[[package]]
+name = "gloo-timers"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fb7d06c1c8cc2a29bee7ec961009a0b2caa0793ee4900c2ffb348734ba1c8f9"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "h2"
 version = "0.3.13"
@@ -537,7 +851,7 @@ checksum = "d5f38f16d184e36f2408a55281cd658ecbd3ca05cce6d6510a176eca393e26d1"
 dependencies = [
  "bytes",
  "http",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
 ]
 
 [[package]]
@@ -577,7 +891,7 @@ dependencies = [
  "httparse",
  "httpdate",
  "itoa",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "socket2",
  "tokio",
  "tower-service",
@@ -666,6 +980,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "js-sys"
+version = "0.3.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "671a26f820db17c2a2750743f1dd03bafd15b98c9f30c7c2628c024c05d73397"
+dependencies = [
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "k2v-client"
 version = "0.1.0"
@@ -683,6 +1006,15 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "kv-log-macro"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0de8b303297635ad57c9f5059fd9cee7a47f8e8daa09df0fcd07dd39fb22977f"
+dependencies = [
+ "log",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -697,7 +1029,7 @@ checksum = "8a99b520993b21a6faab32643cf4726573dc18ca4cf2d48cbeb24d248c86c930"
 dependencies = [
  "byteorder",
  "bytes",
- "nom",
+ "nom 2.2.1",
 ]
 
 [[package]]
@@ -714,7 +1046,7 @@ dependencies = [
  "lber",
  "log",
  "native-tls",
- "nom",
+ "nom 2.2.1",
  "percent-encoding",
  "thiserror",
  "tokio",
@@ -724,6 +1056,19 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec",
+ "bitflags",
+ "cfg-if",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.126"
@@ -749,6 +1094,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
  "cfg-if",
+ "value-bag",
 ]
 
 [[package]]
@@ -764,6 +1110,7 @@ dependencies = [
  "im",
  "itertools",
  "k2v-client",
+ "lazy_static",
  "ldap3",
  "log",
  "pretty_env_logger",
@@ -775,6 +1122,7 @@ dependencies = [
  "rusoto_s3",
  "rusoto_signature",
  "serde",
+ "smtp-server",
  "sodiumoxide",
  "tokio",
  "toml",
@@ -840,6 +1188,19 @@ version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf51a729ecf40266a2368ad335a5fdde43471f545a967109cd62146ecf8b66ff"
 
+[[package]]
+name = "nom"
+version = "6.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
+dependencies = [
+ "bitvec",
+ "funty",
+ "lexical-core",
+ "memchr",
+ "version_check",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.45"
@@ -932,6 +1293,12 @@ version = "6.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "029d8d0b2f198229de29dca79676f2738ff952edf3fde542eb8bf94d8c21b435"
 
+[[package]]
+name = "parking"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "427c3892f9e783d91cc128285287e70a59e206ca452770ece88a76f7a3eddd72"
+
 [[package]]
 name = "password-hash"
 version = "0.3.2"
@@ -955,6 +1322,32 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
+[[package]]
+name = "pin-project"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58ad3879ad3baf4e44784bc6a718a8698867bb991f8ce24d1bcbe2cfb4c3a75e"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "744b6f092ba29c3650faf274db506afd39944f48420f6c86b17cfe0ee1cb36bb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pin-project-lite"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "257b64915a082f7811703966789728173279bdebb956b143dbcd23f6f970a777"
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -973,6 +1366,19 @@ version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
 
+[[package]]
+name = "polling"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "685404d509889fade3e86fe3a5803bca2ec09b0c0778d5ada6ec8bf7a8de5259"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "log",
+ "wepoll-ffi",
+ "winapi",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.16"
@@ -1037,6 +1443,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "radium"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
+
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -1107,6 +1519,15 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax",
+]
+
 [[package]]
 name = "regex-syntax"
 version = "0.6.26"
@@ -1230,7 +1651,7 @@ dependencies = [
  "log",
  "md-5",
  "percent-encoding",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "rusoto_credential",
  "rustc_version",
  "serde",
@@ -1351,6 +1772,16 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
 
+[[package]]
+name = "signal-hook"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a253b5e89e2698464fc26b545c9edceb338e18a89effeeecfea192c3025be29d"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.0"
@@ -1382,6 +1813,62 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eb703cfe953bccee95685111adeedb76fabe4e97549a58d16f03ea7b9367bb32"
 
+[[package]]
+name = "smol"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85cf3b5351f3e783c1d79ab5fc604eeed8b8ae9abd36b166e8b87a089efd85e4"
+dependencies = [
+ "async-channel",
+ "async-executor",
+ "async-fs",
+ "async-io",
+ "async-lock",
+ "async-net",
+ "async-process",
+ "blocking",
+ "futures-lite",
+ "once_cell",
+]
+
+[[package]]
+name = "smtp-message"
+version = "0.1.0"
+source = "git+http://github.com/Alexis211/kannader?branch=feature/lmtp#8c01360230f21c20d4c2da462dcf62e8a801ce0f"
+dependencies = [
+ "auto_enums",
+ "futures",
+ "idna",
+ "lazy_static",
+ "nom 6.1.2",
+ "pin-project",
+ "regex-automata",
+ "serde",
+]
+
+[[package]]
+name = "smtp-server"
+version = "0.1.0"
+source = "git+http://github.com/Alexis211/kannader?branch=feature/lmtp#8c01360230f21c20d4c2da462dcf62e8a801ce0f"
+dependencies = [
+ "async-trait",
+ "chrono",
+ "duplexify",
+ "futures",
+ "smol",
+ "smtp-message",
+ "smtp-server-types",
+]
+
+[[package]]
+name = "smtp-server-types"
+version = "0.1.0"
+source = "git+http://github.com/Alexis211/kannader?branch=feature/lmtp#8c01360230f21c20d4c2da462dcf62e8a801ce0f"
+dependencies = [
+ "serde",
+ "smtp-message",
+]
+
 [[package]]
 name = "socket2"
 version = "0.4.4"
@@ -1404,6 +1891,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -1427,6 +1920,12 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tap"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
@@ -1476,6 +1975,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@@ -1503,7 +2012,7 @@ dependencies = [
  "mio",
  "num_cpus",
  "once_cell",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "signal-hook-registry",
  "socket2",
  "tokio-macros",
@@ -1538,7 +2047,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "50145484efff8818b5ccd256697f36863f587da82cf8b409c53adf1e840798e3"
 dependencies = [
  "futures-core",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "tokio",
 ]
 
@@ -1551,7 +2060,7 @@ dependencies = [
  "bytes",
  "futures-core",
  "futures-sink",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "tokio",
  "tracing",
 ]
@@ -1578,7 +2087,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d0ecdcb44a79f0fe9844f0c4f33a342cbcbb5117de8001e6ba0dc2351327d09"
 dependencies = [
  "cfg-if",
- "pin-project-lite",
+ "pin-project-lite 0.2.9",
  "tracing-attributes",
  "tracing-core",
 ]
@@ -1648,6 +2157,16 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "value-bag"
+version = "1.0.0-alpha.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2209b78d1249f7e6f3293657c9779fe31ced465df091bbd433a1cf88e916ec55"
+dependencies = [
+ "ctor",
+ "version_check",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -1660,6 +2179,12 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "waker-fn"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d5b2c62b4012a3e1eca5a7e077d13b3bf498c4073e33ccd58626607748ceeca"
+
 [[package]]
 name = "walkdir"
 version = "2.3.2"
@@ -1693,6 +2218,91 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27370197c907c55e3f1a9fbe26f44e937fe6451368324e009cba39e139dc08ad"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53e04185bfa3a779273da532f5025e33398409573f348985af9a1cbf3774d3f4"
+dependencies = [
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f741de44b75e14c35df886aff5f1eb73aa114fa5d4d00dcd37b5e01259bf3b2"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17cae7ff784d7e83a2fe7611cfe766ecf034111b49deb850a3dc7699c08251f5"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99ec0dc7a4756fffc231aab1b9f2f578d23cd391390ab27f952ae0c9b3ece20b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d554b7f530dee5964d9a9468d95c1f8b8acae4f282807e7d27d4b03099a46744"
+
+[[package]]
+name = "web-sys"
+version = "0.3.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b17e741662c70c8bd24ac5c5b18de314a2c26c32bf8346ee1e6f53de919c283"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "wepoll-ffi"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d743fdedc5c64377b5fc2bc036b01c7fd642205a0d96356034ae3404d49eb7fb"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1767,6 +2377,12 @@ version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
 
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
+
 [[package]]
 name = "xml-rs"
 version = "0.8.4"
diff --git a/Cargo.toml b/Cargo.toml
index 0fabd23..16d0b52 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ clap = { version = "3.1.18", features = ["derive", "env"] }
 hex = "0.4"
 im = "15"
 itertools = "0.10"
+lazy_static = "1.4"
 ldap3 = { version = "0.10", default-features = false, features = ["tls"] }
 log = "0.4"
 pretty_env_logger = "0.4"
@@ -31,5 +32,7 @@ tokio = "1.17.0"
 toml = "0.5"
 zstd = { version = "0.9", default-features = false }
 
+smtp-server = { git = "http://github.com/Alexis211/kannader", branch = "feature/lmtp" }
+
 k2v-client = { git = "https://git.deuxfleurs.fr/Deuxfleurs/garage.git", branch = "improve-k2v-client" }
 #k2v-client = { path = "../garage/src/k2v-client" }
diff --git a/src/config.rs b/src/config.rs
index a1de5ba..3fd0bd4 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,5 +1,6 @@
 use std::collections::HashMap;
 use std::io::Read;
+use std::net::SocketAddr;
 use std::path::PathBuf;
 
 use anyhow::Result;
@@ -13,6 +14,8 @@ pub struct Config {
 
     pub login_static: Option<LoginStaticConfig>,
     pub login_ldap: Option<LoginLdapConfig>,
+
+    pub lmtp: Option<LmtpConfig>,
 }
 
 #[derive(Deserialize, Debug, Clone)]
@@ -62,6 +65,11 @@ pub struct LoginLdapConfig {
     pub bucket_attr: Option<String>,
 }
 
+#[derive(Deserialize, Debug, Clone)]
+pub struct LmtpConfig {
+    pub bind_addr: SocketAddr,
+}
+
 pub fn read_config(config_file: PathBuf) -> Result<Config> {
     let mut file = std::fs::OpenOptions::new()
         .read(true)
diff --git a/src/mail_uuid.rs b/src/mail_uuid.rs
new file mode 100644
index 0000000..d0d582f
--- /dev/null
+++ b/src/mail_uuid.rs
@@ -0,0 +1,76 @@
+use std::sync::atomic::{AtomicU64, Ordering};
+
+use lazy_static::lazy_static;
+use rand::prelude::*;
+use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
+
+use crate::time::now_msec;
+
+/// A Mail UUID is composed of two components:
+/// - a process identifier, 128 bits, itself composed of:
+///   - the timestamp of when the process started, 64 bits
+///   - a 64-bit random number
+/// - a sequence number, 64 bits
+#[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Debug)]
+pub struct MailUuid(pub [u8; 24]);
+
+struct UuidGenerator {
+    pid: u128,
+    sn: AtomicU64,
+}
+
+impl UuidGenerator {
+    fn new() -> Self {
+        let time = now_msec() as u128;
+        let rand = thread_rng().gen::<u64>() as u128;
+        Self {
+            pid: (time << 64) | rand,
+            sn: AtomicU64::new(0),
+        }
+    }
+
+    fn gen(&self) -> MailUuid {
+        let sn = self.sn.fetch_add(1, Ordering::Relaxed);
+        let mut res = [0u8; 24];
+        res[0..16].copy_from_slice(&u128::to_be_bytes(self.pid));
+        res[16..24].copy_from_slice(&u64::to_be_bytes(sn));
+        MailUuid(res)
+    }
+}
+
+lazy_static! {
+    static ref GENERATOR: UuidGenerator = UuidGenerator::new();
+}
+
+pub fn gen_uuid() -> MailUuid {
+    GENERATOR.gen()
+}
+
+// -- serde --
+
+impl<'de> Deserialize<'de> for MailUuid {
+    fn deserialize<D>(d: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let v = String::deserialize(d)?;
+        let bytes = hex::decode(v).map_err(|_| D::Error::custom("invalid hex"))?;
+
+        if bytes.len() != 24 {
+            return Err(D::Error::custom("bad length"));
+        }
+
+        let mut tmp = [0u8; 24];
+        tmp[..].copy_from_slice(&bytes);
+        Ok(Self(tmp))
+    }
+}
+
+impl Serialize for MailUuid {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&hex::encode(self.0))
+    }
+}
diff --git a/src/mailbox.rs b/src/mailbox.rs
index a20ca15..49d8e56 100644
--- a/src/mailbox.rs
+++ b/src/mailbox.rs
@@ -1,11 +1,11 @@
 use anyhow::Result;
 use k2v_client::K2vClient;
-use rand::prelude::*;
 use rusoto_s3::S3Client;
 
 use crate::bayou::Bayou;
 use crate::cryptoblob::Key;
 use crate::login::Credentials;
+use crate::mail_uuid::*;
 use crate::uidindex::*;
 
 pub struct Mailbox {
@@ -38,12 +38,10 @@ impl Mailbox {
 
         dump(&self.uid_index);
 
-        let mut rand_id = [0u8; 24];
-        rand_id[..16].copy_from_slice(&u128::to_be_bytes(thread_rng().gen()));
         let add_mail_op = self
             .uid_index
             .state()
-            .op_mail_add(MailUuid(rand_id), vec!["\\Unseen".into()]);
+            .op_mail_add(gen_uuid(), vec!["\\Unseen".into()]);
         self.uid_index.push(add_mail_op).await?;
 
         dump(&self.uid_index);
diff --git a/src/main.rs b/src/main.rs
index ada94fc..b8231f1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@ mod bayou;
 mod config;
 mod cryptoblob;
 mod login;
+mod mail_uuid;
 mod mailbox;
 mod server;
 mod time;
diff --git a/src/uidindex.rs b/src/uidindex.rs
index 1e30190..ecd52ff 100644
--- a/src/uidindex.rs
+++ b/src/uidindex.rs
@@ -1,17 +1,12 @@
 use im::OrdMap;
-use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
 
 use crate::bayou::*;
+use crate::mail_uuid::MailUuid;
 
 type ImapUid = u32;
 type ImapUidvalidity = u32;
 
-/// A Mail UUID is composed of two components:
-/// - a process identifier, 128 bits
-/// - a sequence number, 64 bits
-#[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Debug)]
-pub struct MailUuid(pub [u8; 24]);
-
 #[derive(Clone)]
 pub struct UidIndex {
     pub mail_uid: OrdMap<MailUuid, ImapUid>,
@@ -176,30 +171,3 @@ impl Serialize for UidIndex {
         val.serialize(serializer)
     }
 }
-
-impl<'de> Deserialize<'de> for MailUuid {
-    fn deserialize<D>(d: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let v = String::deserialize(d)?;
-        let bytes = hex::decode(v).map_err(|_| D::Error::custom("invalid hex"))?;
-
-        if bytes.len() != 24 {
-            return Err(D::Error::custom("bad length"));
-        }
-
-        let mut tmp = [0u8; 24];
-        tmp[..].copy_from_slice(&bytes);
-        Ok(Self(tmp))
-    }
-}
-
-impl Serialize for MailUuid {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        serializer.serialize_str(&hex::encode(self.0))
-    }
-}