When your box gets into this condition what does a netstat -a look like? Also as of v 8.00 the Queue Manager handles deliver and SMTP32 does not so the legacy setting of number of processes will have no effect on your deliveries.
Eric S ----- Original Message ----- From: "Wesley M" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, July 09, 2003 2:52 PM Subject: [IMail Forum] SMTP Connection Issue > Hardware/Software Environment: > Mail Server Dual 1.3 Ghz Pentium 4 Win2000 1 gig Physical Ram, 6X that in > virutal memory allocated in the form of disk space reserved. Imail 8.01. > > Problem Description: > After about a max of 70-80 inbound connections(sometimes less, sometimes > more) to imail.stic.net from filter.stic.net. no more connections are > allowed, not even using telnet to port 25 (see below). After speaking with > IPSwitch Tech support, we discussed the setting in Imail for the number of > SMTP processes. According to previous discussions with IPswitch Tech > support, this setting has nothing to do with the inbound number of SMTP > connections, but with the number of processes, processing mail already > received. Which is it? We up the number to 75 from the 45 it was set at, > with no discernable effect to our smtp connection testing. The problem > needs a solution, we have been told that there is "no hardcoded limit" to > the number of connections, and it's strictly related to physical resources > on the machine. During our testing, the CPU's are typically 25% loaded, > with plenty of actual Memory remaining, and the Virtual memory never > increasing. When we put a UNIX server in front of our mail server, a much > slower machine, less memory, it will receive more mail that Imail can, and > Imail cannot keep up with the mail being relayed. > > [EMAIL PROTECTED] root]# ./smtp.sh 20 > ++ number=20 > ++ smtp-source -v -r 50 -f [EMAIL PROTECTED] -l 7000 -s 20 -m 20 -S 'testing > ++ egrep 'ESMTP|Connection' > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15183-59) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15184-60) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15185-61) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15186-62) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15187-63) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15188-64) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15189-64) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15190-64) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15191-64) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15192-63) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15193-63) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15194-64) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15195-65) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15196-62) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15197-62) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15198-61) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15199-62) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15200-63) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15201-63) NT-ESMTP Server X1 > smtp-source: <<< 220 imail.stic.net (IMail 7.15 15202-63) NT-ESMTP Server X1 > [EMAIL PROTECTED] root]# ./smtp.sh 20 > ++ number=20 > ++ smtp-source -v -r 50 -f [EMAIL PROTECTED] -l 7000 -s 20 -m 20 -S 'testing > ++ egrep 'ESMTP|Connection' > smtp-source: fatal: connect: Connection refused > [EMAIL PROTECTED] root]# telnet imail.stic.net 25 > Trying 216.198.0.26... > telnet: connect to address 216.198.0.26: Connection refused > > Thanks In Advance, > Wesley M > STIC>NET > > > 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/ > 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/
