Import upstream v0.16.22, stripped

Upstream commit: 474dd0229cb20cf513036619781ed97bd8073c3f
Enterprise-only files removed or emptied: 63
Enterprise-only snippets removed: 117 in 50 files
Dangling module declarations removed: 5
Cargo edits turning enterprise off: 14
Verification: clean
Enterprise feature gates left for rebuilt features: 19 in 18 files

Produced by tools/fork/strip.py. The full report is in docs/fork/strip-reports/ on main.

crates/smtp/Cargo.toml

@@ -0,0 +1,56 @@
+[package]
+name = "smtp"
+description = "Stalwart SMTP Server"
+authors = [ "Stalwart Labs LLC <[email protected]>"]
+repository = "https://github.com/stalwartlabs/smtp-server"
+homepage = "https://stalw.art/smtp"
+keywords = ["smtp", "email", "mail", "server"]
+categories = ["email"]
+license = "AGPL-3.0-only OR LicenseRef-SEL"
+version = "0.16.22"
+edition = "2024"
+
+[dependencies]
+store = { path =  "../store" }
+types = { path =  "../types" }
+utils = { path =  "../utils" }
+directory = { path =  "../directory" }
+common = { path =  "../common" }
+email = { path =  "../email" }
+registry = { path =  "../registry" }
+spam-filter = { path =  "../spam-filter" }
+trc = { path = "../trc" }
+mail-auth = { version = "0.13", features = ["rkyv"] }
+mail-parser = { version = "0.11", features = ["full_encoding"] } 
+mail-builder = { version = "1.0" } 
+smtp-proto = { version = "0.2.3", features = ["rkyv", "serde"] }
+sieve-rs = { version = "0.7", features = ["rkyv"] } 
+ahash = { version = "0.8" }
+rustls = { version = "0.23.43", default-features = false, features = ["std", "aws_lc_rs", "tls12"] }
+rustls-pki-types = { version = "1", features = ["std"] }
+rustls-webpki = { version = "0.103", default-features = false, features = ["std", "aws-lc-rs"] }
+tokio = { version = "1.53", features = ["full"] }
+tokio-rustls = { version = "0.26", default-features = false, features = ["aws_lc_rs", "tls12"] }
+sha2 = "0.11"
+parking_lot = "0.12"
+blake3 = "1.8"
+rand = "0.10.2"
+x509-parser = { version = "0.18", features = ["verify-aws"] }
+reqwest = { version = "0.13", default-features = false, features = ["rustls", "http2"] }
+serde = { version = "1.0", features = ["derive", "rc"] }
+serde_json = "1.0"
+rkyv = { version = "0.8.18", features = ["little_endian"] }
+compact_str = "0.10.0"
+hashify = { version = "0.2" }
+base64 = "0.23"
+
+[features]
+test_mode = ["mail-auth/test"]
+enterprise = []
+
+#[[bench]]
+#name = "hash"
+#harness = false
+
+[lints]
+workspace = true