Quick and dirty script to check the probability of spam for a mail in the postfix queue
Had a FreeBSD SMTP server running Postfix with SASL, wrote a quick script to determine if one or all of the mails in the queue could be "spam" - that is, if sender address was different from the authenticated account, which could indicate an abused account.
bash postfix-sasl-abuse-check.sh <queue-id|ALL>