Results for ehlo

Direct-to-MX email delivery with DKIM signing, IPv4 forcing, MX fallback, bulk sending, attachments, DKIM key generation, and DNS verification

SMTP client library

SMTP protocol parser, formatter, and session state machine (RFC 5321) — zero I/O, async-runtime-agnostic.

simple heapless command line interface parser for embedded devices

Async byte-stream transport trait with pluggable TLS backends

Outbound SMTP client: MX resolution, DANE/STARTTLS, response parsing — async, transport-agnostic primitives for RFC 5321 senders.

extendible smtp implementation for tokio

A robust, colorized SMTP email tester with detailed logging and flexible server configuration

Production-quality SMTP client library implementing RFC 5321

SMTP anti-spam primitives: DNS blocklist (DNSBL) queries, greylisting policy with optional in-process kevy store, and PTR / forward-confirmed reverse DNS (FCrDNS) checks.

Tokio Decoder/Encoder for the RFC 5321 SMTP wire format — switches between line-oriented command mode (CRLF-terminated, ≤1024 octets) and DATA mode (raw bytes until CRLF.CRLF terminator). Includes optional SMTP-smuggling protection: detects bare-LF before the dot-terminator and either rejects the payload (Strict) or normalizes line endings (Permissive).

Dual-port SMTP server: Secure submission (465) & Inbound forwarding (25) / 双端口 SMTP 服务：安全提交 (465) 与入站转发 (25)

Provides SMTP STARTTLS support for Ruby 1.8.6 (built-in for 1.8.7+). Simply require 'smtp_tls' and use the Net::SMTP#enable_starttls method to talk to servers that use STARTTLS. require 'net/smtp' begin require 'smtp_tls' rescue LoadError end smtp = Net::SMTP.new address, port smtp.enable_starttls smtp.start Socket.gethostname, user, password, authentication do |server| server.send_message message, from, to end You can also test your SMTP connection settings using mail_smtp_tls: $ date | ruby -Ilib bin/mail_smtp_tls smtp.example.com submission \ "your username" "your password" plain \ from@example.com to@example.com Using SMTP_TLS 1.0.3 -> "220 smtp.example.com ESMTP XXX\r\n" <- "EHLO you.example.com\r\n" -> "250-smtp.example.com at your service, [192.0.2.1]\r\n" -> "250-SIZE 35651584\r\n" -> "250-8BITMIME\r\n" -> "250-STARTTLS\r\n" -> "250-ENHANCEDSTATUSCODES\r\n" -> "250 PIPELINING\r\n" <- "STARTTLS\r\n" -> "220 2.0.0 Ready to start TLS\r\n" TLS connection started <- "EHLO you.example.com\r\n" -> "250-smtp.example.com at your service, [192.0.2.1]\r\n" -> "250-SIZE 35651584\r\n" -> "250-8BITMIME\r\n" -> "250-AUTH LOGIN PLAIN\r\n" -> "250-ENHANCEDSTATUSCODES\r\n" -> "250 PIPELINING\r\n" <- "AUTH PLAIN BASE64_STUFF_HERE\r\n" -> "235 2.7.0 Accepted\r\n" <- "MAIL FROM:<from@example.com>\r\n" -> "250 2.1.0 OK XXX\r\n" <- "RCPT TO:<to@example.com>\r\n" -> "250 2.1.5 OK XXX\r\n" <- "DATA\r\n" -> "354 Go ahead XXX\r\n" writing message from String wrote 91 bytes -> "250 2.0.0 OK 1247028988 XXX\r\n" <- "QUIT\r\n" -> "221 2.0.0 closing connection XXX\r\n" This will connect to smtp.example.com using the submission port (port 587) with a username and password of "your username" and "your password" and authenticate using plain-text auth (the submission port always uses SSL) then send the current date to to@example.com from from@example.com. Debug output from the connection will be printed on stderr.