[IMail Forum] Queue Listen Pipes

Wed, 18 Aug 2004 10:54:01 -0700

I had kept my "Queue Listen Pipes" at the default of 4 for many years, But ever since aggressively using the anti-spam filters I have seen that the amount of time it takes to process an email (check it against 8 spam databases) is taking an long time - sometimes is will be as long as ten minutes before it finishes (one minute between blacklist lookups!). See example below. I boosted the Queue pipes from 4 to 10 this morning and it did not seem to make any difference. I am also going to evaluate the effectiveness of the blacklist tests we are using over the next day or so - I will report back to the list what I find to see about dropping any that aren't helping. So the question is what do most of you have this Queue Pipes" setting configured for?

Server is running pretty low on "free" memory and the CPU is running at about 20% on average. This is an older box and maybe the solution is to upgrade the hardware.

Example (with Queue Listen Pipes = 4 with "lots" of lines snipped out that deal with other emails)
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08:18 05:59 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (SpamCop:*:bl.spamcop.net)
08:18 06:00 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (SpamCop:*:bl.spamcop.net)
08:18 06:00 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (List:*:list.dsbl.org)
08:18 06:01 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (List:*:list.dsbl.org)
08:18 06:01 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (ahbl:*:dnsbl.ahbl.org)
08:18 06:02 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (ahbl:*:dnsbl.ahbl.org)
08:18 06:02 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (njabl:*:dnsbl.njabl.org)
08:18 06:03 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (njabl:*:dnsbl.njabl.org)
08:18 06:03 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (spamhaus:*:sbl-xbl.spamhaus.org)
08:18 06:04 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (spamhaus:*:sbl-xbl.spamhaus.org)
08:18 06:04 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (Blitzedall:*:opm.blitzed.org)
08:18 06:05 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (Blitzedall:*:opm.blitzed.org)
08:18 06:05 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (ORDB:*:relays.ordb.org)
08:18 06:06 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (ORDB:*:relays.ordb.org)
08:18 06:06 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: connecting to service (DSBLMulti:*:multihop.dsbl.org)
08:18 06:07 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> BLACKLIST: 208.195.160.175 was not found on list (DSBLMulti:*:multihop.dsbl.org)
08:18 06:07 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> VALIDATION: (MAIL FROM) microworks.net validating MAIL FROM address [EMAIL PROTECTED]
08:18 06:07 SMTPD(52bb02d800f6b7f1) [00000792] <microworks.net> VALIDATION: (MAIL FROM) microworks.net SUCCEEDED for user [EMAIL PROTECTED]
08:18 06:07 SMTP(52bb02d800f6b7f1) Got Content Filter for microworks.net
08:18 06:07 SMTP(52bb02d800f6b7f1) scanning the subject for phrases
08:18 06:07 SMTP(52bb02d800f6b7f1) scanning the body for phrases
08:18 06:07 SMTP(52bb02d800f6b7f1) performing statistical analysis
08:18 06:07 SMTP(52bb02d800f6b7f1) The following words were used to compute the probability email is spam
08:18 06:07 SMTP(52bb02d800f6b7f1) word = jason, probability = 0.010000
08:18 06:07 SMTP(52bb02d800f6b7f1) word = racers, probability = 0.969030
08:18 06:07 SMTP(52bb02d800f6b7f1) word = tuesday, probability = 0.033294
08:18 06:07 SMTP(52bb02d800f6b7f1) word = original, probability = 0.044816
08:18 06:07 SMTP(52bb02d800f6b7f1) word = mike, probability = 0.050728
08:18 06:07 SMTP(52bb02d800f6b7f1) word = august, probability = 0.054141
08:18 06:07 SMTP(52bb02d800f6b7f1) word = thanks, probability = 0.058789
08:18 06:07 SMTP(52bb02d800f6b7f1) word = posted, probability = 0.063199
08:18 06:07 SMTP(52bb02d800f6b7f1) word = ohio, probability = 0.106717
08:18 06:07 SMTP(52bb02d800f6b7f1) word = thank, probability = 0.119918
08:18 06:07 SMTP(52bb02d800f6b7f1) word = yet, probability = 0.119950
08:18 06:07 SMTP(52bb02d800f6b7f1) word = change, probability = 0.122161
08:18 06:07 SMTP(52bb02d800f6b7f1) word = anything, probability = 0.123438
08:18 06:07 SMTP(52bb02d800f6b7f1) word = mid, probability = 0.127906
08:18 06:07 SMTP(52bb02d800f6b7f1) word = help, probability = 0.129557
08:18 06:07 SMTP(52bb02d800f6b7f1) probability email is spam 0.000000: email is good
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