> I’m not so sure it’s a DNS issue because the Imail spam filters run
perfectly fine,
> which I am now using in place of Declude. They do not do as good a
job identifying
> spam, but they are better than nothing.
It probably is a DNS issue. It sounds like the problem is that the
E-mails aren't being processed as quickly as they need to be (~10
seconds given your volume), and few things can cause scanning delays of
multiple seconds (the 2 most common being a virus scanner that times
out, or a spam database that times out or is very slow). So I'm guessing
that the DNS responses just aren't fast enough.
If the IMail v8 anti-spam doesn't cause these issues, it is probably
because Declude JunkMail is doing more spam database lookups that IMail is.
Doing the debug mode and checking for timeouts as Darin suggested would
be a good idea. A single dead spam test can easily push you into the
processing time limit with volumes like yours.
-Scott
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