Solved: Cisco Spam Blocker

aromanesk · ‎12-03-2009

Should I modify the A record and reverse DNS to point to the Public IP on the Cisco Spam Blocker

dzavasni · ‎12-03-2009

That is correct. You want the blocker to be first in line for your email handling so that it can filter and inspect properly and then deposit the filtered mail to your mail server. And as you say, you'll want the PTR record to match.

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dzavasni · ‎12-03-2009

That is correct. You want the blocker to be first in line for your email handling so that it can filter and inspect properly and then deposit the filtered mail to your mail server. And as you say, you'll want the PTR record to match.

jsteer · ‎12-10-2009

It's important that you have A & PTR records set correctly. Failure to have correct reverse dns is a major problem for many senders of mail.

There are some good guidelines on the internet around other best practices that are worth reading, including:

- MAAWG - sender best practice

http://www.maawg.org/about/MAAWG_Sender_BCP/MAAWG_Senders_BCP_Combine.pdf

Not all may be relevant however it's an excellent source of things to consider for sending mail to the internet

- Gmail POstmaster

http://mail.google.com/support/bin/answer.py?hl=en&answer=81126

Jason