Solène :flan_hacker: on Nostr: Dear #opensmtpd admins, be aware of the "mask-src" option for listen directives in ...

Dear #opensmtpd admins, be aware of the "mask-src" option for listen directives in the configuration file.

https://man.openbsd.org/smtpd.conf#mask-src

When not using mask-src, your emails contain your mail client hostname and IP address used to reach your SMTP server (which is your public IP except if you connect through a VPN or locally)