Server – brokkr.net

Let’s do Postfix slowly and properly – Part 11: pflogsumm

As much I have enjoyed looking at Postfix logs over the past couple of weeks, I don’t really want to keep poring over them on a daily basis…

Post date August 30, 2020
Tags let's do postfix again, logs, pflogsumm, postfix, sendmail

Let’s do Postfix slowly and properly – Part 10: Restricting access

When I see what people are trying to do to my poor server, I want to reach for some kind of cyberweapon. That guy, zap. That IP, zip.…

Post date August 22, 2020
Tags access, anvil, let's do postfix again, postfix, restrictions

Let’s do Dovecot slowly and properly – Part 4: Filtering with Sieve

Sieve is a filtering plugin for Dovecot’s LMTP service. Filtering applies general rules to incoming mail: Move this here, mark this read, flag this as spam, etc. Simple…

Post date August 20, 2020
Tags dovecot, let's do dovecot, lmtp, managesieve, sieve

Let’s do Postfix slowly and properly – Part 9: Using Rspamd as a spam milter

There is a reason that this part of the series didn’t happen sooner: Spam is tricky, spam fighting software setup is possibly even more so. The tools I…

Post date August 13, 2020
Tags email, let's do postfix again, postfix, rspamd, spam, spamassassin

Let’s do Postfix slowly and properly – Part 8: PTR and SPF records

Incoming and outgoing mail have tended so far to generate separate topics and posts in this series. But reducing spam and not getting taken for a spammer are…