Installing a Let's Encrypt certificate for your qmail, dovecot and apache servers
Changelog Aug 6, 2023The certificates installation is now based on dehydrated. The previous documentation based on certbot will be left as is at the bottom of this page, but it won't be updated anymore. May 18, 2023added the option --key-type rsa to the...
Configuring the Sender Rewriting Scheme (SRS) on qmail
open-spf.org libsrs2 site Marcelo Coelho's patch for qmail SPF "breaks" email forwarding. SRS is a way to fix it. SRS is a simple way for forwarding MTAs to rewrite the sender address. Configuration Configure srsfilter, so that it will be called when an email for the...
Greylisting for qmail
Greylisting is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate, the originating server will try again after...
Testing qmail, SMTP and auth
At this time /command/svcscanboot should have started qmail: > ps axfww 20017 ? Ss 0:00 /bin/sh /command/svscanboot 20019 ? S 0:00 \_ svscan /service 20021 ? S 0:00 | \_ supervise qmail-submission 20032 ? S 0:00 | | \_ /usr/local/bin/tcpserver -v -R -l...
