Hi, Have been running Imail 6.05 for several years now without any major problems. About 2 weeks ago we needed to re-install NT 4.0. We got everything installed SP6A plus latest patches and then re-installed imail 6.0->6.06 and post 6.06 patches.
Soon after we begun to see the mail server gradually slow down until it would just about stop (would take 5 minutes to just login via web messaging) - this would occur about 3-5 hours after sending out about 50,000 emails. We would reboot which would clear things up for a while but then it would gradually slow down again. We noticed a lot of the email bouncing. NT Event logs are clean. We checked the log files when the problem was occuring and noticed a lot of stack connect fail xx.xx.xx.xx. messages. We looked through the ipswitch knowledge base and checked to make sure everything was set up as specified (http://support.ipswitch.com/kb/IM-19981110-DD02.htm) but the problem continued. Problems only occured with outgoing mail. The problem seems to occur when sending out 10,000 plus emails. Things work fine for awhile but then we gradually seem to get Stack connect fail errors on individual SMTP processes. We verified DNS was working correctly. As per previous threads, the IP address on the errors do seem to go back to A records versus MX records. If just a few emails are going out, Imail seems to work fine. It appears that the Stack connect fail errors are occuring with the same SMTP process (i.e. (0000005C)) - this process once it has begun failing will fail everytime. If we send out a new message that's not listed in the spool, it gets a new process (000000C3) and seems to work okay. See log sample below. 12:16 01:21 SMTP-(0000005C) Stack connect fail "211.233.28.112" ... 12:16 01:51 SMTP-(000000C3) processing d:\imail\spool\Qab7a106.SMD 12:16 01:51 SMTP-(000000C3) Trying yahoo.com (0) 12:16 01:51 SMTP-(000000C3) Connect yahoo.com [64.157.4.78:25] (1) 12:16 01:51 SMTP-(000000C3) 220 YSmtp mta120.mail.sc5.yahoo.com ESMTP service ready 12:16 01:51 SMTP-(000000C3) >EHLO mail.savebigger.com 12:16 01:51 SMTP-(000000C3) 250-mta120.mail.sc5.yahoo.com 12:16 01:51 SMTP-(000000C3) 250-8BITMIME 12:16 01:51 SMTP-(000000C3) 250-SIZE 10485760 12:16 01:51 SMTP-(000000C3) 250 PIPELINING 12:16 01:51 SMTP-(000000C3) >MAIL FROM:<[EMAIL PROTECTED]> 12:16 01:51 SMTP-(000000C3) 250 sender <[EMAIL PROTECTED]> ok 12:16 01:51 SMTP-(000000C3) >RCPT To:<[EMAIL PROTECTED]> 12:16 01:51 SMTP-(000000C3) 250 recipient <[EMAIL PROTECTED]> ok 12:16 01:51 SMTP-(000000C3) >DATA 12:16 01:51 SMTP-(000000C3) 354 go ahead 12:16 01:51 SMTP-(000000C3) >. 12:16 01:51 SMTP-(000000C3) 250 ok dirdel 12:16 01:51 SMTP-(000000C3) rdeliver yahoo.com [EMAIL PROTECTED] (1) <[EMAIL PROTECTED]> 2611 12:16 01:51 SMTP-(000000C3) >QUIT 12:16 01:51 SMTP-(000000C3) 221 mta120.mail.sc5.yahoo.com 12:16 01:51 SMTP-(000000C3) finished d:\imail\spool\Qab7a106.SMD status=1 12:16 01:51 SMTP-(0000005C) Stack connect fail "66.150.161.135" 12:16 01:51 SMTP-(0000010E) Stack connect fail "149.174.130.216" As far as NIC, we are using a Intel Pro/100. There is a second built in NIC but when NT was installed, this was removed from the list under TCP/IP properties in Control Panel ... Networking. Any ideas? Any harm in temporarily going back to version 6.05 and seeing if the problem continues? Thanks in advance for any help/ideas, etc... Adam 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/
