Mail setup ¶

Note: this page only lists the high-level mail setup to prevent leaking information to spammers who might benefit from it.

Mail checks ¶

Validity of:

• HELO/EHLO required
• Protocol conformity (pipelining, etc)
• non-RBL listing of sender
• DNS <-> RDNS

Mail content:

• SpamHaus? DBL (through: ​https://www.teuton.org/~ejm/exim_surbl/)
• SpamAssassin?

Note: SpamAssassin? also contains the SpamHaus? DBL, but mails containing links listed in the DBL were regularly forwarded regardless (due to insufficient SPAM score). This has been addressed by checking the DBL and blocking DBL listing at the MTA level.