The dilemma: I have a blacklist that says this small range of IPs (say Postini or some services source addresses) are the only ones not in the DNS data base blacklist I created. This was to be used as a drop everything trusted blacklist for it was my own list and and geared to a known service. I could not simply filter on the router all traffic for I have many many virtual hosts. I wanted to have custom blacklists per domain. Then learnt I needed these per IP, then learn that "misdirected mail" would be picked up on any IP and there seems to be no way to prevent this.
This is the problem with anti-spam software that doesn't support multi-hop setups -- you need workarounds like yours, which have limitations to them. If IMail v8's anti-spam supported multi-hop setups, you could just give it the IPs of the Postini service, and have it automatically bypass them (correctly scanning the E-mail based on the IP that sent it to Postini, rather than Postini's IP) or whitelist them (so it won't get blocked on your server).
In your case, I don't think there is a workaround to this limitation in your workaround -- the problem is that E-mail can be deleted before it reaches any rules that could be used to try to allow the E-mail through.
-Scott
---
Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000.
Declude Virus: Ultra reliable virus detection and the leader in mailserver vulnerability detection.
Find out what you've been missing: Ask for a free 30-day evaluation.
--- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]
To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
