Well, im starting to give up with this Imail AntiSpam features, as i see it, they add tooooo much latency to email delivery!
That's because the DNS-based spam tests are run in serial, rather than in parallel (the way that Declude runs them). So if you have 20 different spam databases, and each takes exactly 3 seconds to respond, it would take 60 seconds for IMail v8's anti-spam to process the E-mail (versus 3 seconds for Declude JunkMail). If some time out, well, the delays can be a lot longer.
We only use BlackListing tests (Mails last more than 5 minutes to deliver, EVEN LOCALY) , and if we turn on the other A-SPAM features, mails get stuck at the queue for about 1 hour(The only thing at the logs is that the procees is performing spam checks).
The 1 hour seems like it isn't normal -- it definitely shouldn't take that long.
I recently sended an email to the list, and someone pointed out that Imail had some issues with Windows 2003 + MS.DNS (Wich is my config) but still can not figure out how to solve the problem.
Tonight im planning to go back to Windows 2000 server + DNS but I really want to know if this is normal ?.
It is normal to see delays of a minute or so (and perhaps 5 minutes, if tests are timing out); the 1-hour delay is not normal. For the Windows 2003 + MS DNS issue, you can search for posts from John Tolmachoff, who discovered the problem.
spamhaus * sbl.spamhaus.org D T F Spamhaus-SBL+XBL * sbl-xbl.spamhaus.org D T F
FYI, these two tests (the first is SBL, the second is both SBL and SBL-XBL) will cause a double weight for E-mails listed in SBL (as it will fail both tests).
Again, when you look at the spam logs, i receive the following like a zillion of times:
05:04 17:41 SMTPD(1c0618c2004ea8d6) [00002164] <geo.net.co> BLACKLIST: failed to connect to service (Composite-Blocking-List:*:cbl.abuseat.org)
And so on and on with any black list......some emails get checked, others not!.
Do you run your own DNS server? If not, your Internet provider may be blocking access to the spam databases. AT&T and Sprint recently did that.
I dont know if i need to convince my boss to buy another third party software (like Declude JunkMail or IMGate), but the last Server Investment promised to be the solution (Wich obviously was not).
That may not be necessary yet, if you're willing to put up with some quirks. I'm guessing a DNS issue.
If you are interested in a 30-day free evaluation of Declude JunkMail, though, you can send the Official Host Name ("Host Name" on the General tab of IMail Administrator, when "localhost" is highlighted on the left side of the screen) of your IMail server to [EMAIL PROTECTED] and we can get you set up. That should be able to provide what you need to convince the boss. :)
-Scott
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