Michael Maness wrote:
> My qmail toaster has been installed and running for 6+ years and now gmail
> and ATT have blacklisted my server from sending email to their domains.
> They claim blacklisting due to abuse, I've looked at the logs through
> ISOQLOG and everything appears to be normal.

You may be being blacklisted as part of a block, rather than as a result
of traffic originating from your server.

At one point last year, my server was blacklisted by Gmail, AT&T, and
Microsoft. I eventually found a tool - can't remember where it was, sorry
- that displayed spam complaints for individual IPs and blocks. My IPs
were all green, with no current complaints, but they were squarely in the
middle of a block full of active spam sources.

My hosting provider at the time declined to take any action against their
spamming customers, allocate me new IPs in a non-spammy block or,
eventually, even to respond to my support tickets. In the end, I changed
providers, which resolved the problem.

Try searching Google for "ip reputation" or "netblock reputation" and see
if you can find a tool that shows the reputation of your server and its
immediate neighbors. This may tell you whether the problem is really with
your server, or with the neighborhood it lives in.

Angus


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