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SMTPRELAY

SMTPRELAY is simple and fast smtp server for mass mailing purposes, written in GO

Features

  • Built-in DKIM signing Most of mail providers require DKIM signature header in your messages. Smtprelay supports DKIM out of box.
  • Direct and relay mode. In direct mode smtprelay resolves DNS MX records for each recipient and sends message to mailserver, gained from MX. In relay mode it redirects all messages to relay server, specified in configuration file.