Today while training some sysadmins I shared this real photo of ancient Greek engineers configuring a mailserver.
On the left the brave engineer is trying to stop unauthorised pipelining through the MTA while their knee is viciously attacked by a subtly broken DKIM key. Meanwhile, their co-sysadmin is hammering away at a perfectly good Postfix sender restrictions policy, screaming "It's not DNS!", while bitten by a PTR record quietly hissing "It'ssss DNSssss".
