Mail-Server/README.md

Documentation and information relating to my self-hosted mail server

Postfix is used as the SMTP server and Dovecot is used as the IMAP server

TLS certs are obtained via lets encrypt

OpenDKIM is used for signing paired with spamassassin for mail filtering

A custom self-written Bash script is used to parse logs and automatically drop connections from offenders with iptables

Features

• Appropriate DNS records (SPF, PTR, DKIM, DMARC) implemented for authentic, trusted and reliable mail. Full report available here

• Strong encryption with AES-128-GCM and secure mail transmission with TLS 1.3

• Mail deliverable to the most prolific service proivders, such as Microsoft, Google and Yahoo

• Fully functional mail accounts accessible via IMAP/SMTP clients

• Mail accounts secured with a custom IPS script automatically dropping connections from IPs with suspicious activity

Extremely useful tools in debugging

• The "postfix check" command

• The "doveconf -n" command

• https://www.appmaildev.com/en/dkim

• https://sendtestemail.com/

• https://mxtoolbox.com

Extremely useful documentation

• https://www.postfix.org/documentation.html

• https://doc.dovecot.org/

• https://thomas-leister.de/en/mailserver-migrate-config-to-dovecot-2.4-debian-trixie/

• https://landchad.net/mail/