Mail filtering at the relay, revisited
Two weeks of post-ILOVEYOU operational shifts. Time to write down the mail-filtering architecture I now think every operator should be running, with worked examples.
Notes from the field
Writing
Long-form thinking on cyber defence, detection, and resilience — from Slackware-era honeypots through to AI-driven SOC analytics.
Showing posts tagged mail security — 2 results.
Sendmail relay configuration without losing your mind
Sendmail's reputation for opacity is earned. The relay configuration is, in practice, the part that matters most for security. Here is how I have learned to read it without going mad.