Hi, I am running 8.12 on a NT box and I am getting intermittent rl-recv: Blocking call cancelled in the log files.
07:11 01:56 SMTP-(cb51000700f83b4e) Trying yahoo.com (0) 07:11 01:56 SMTP-(cb51000700f83b4e) Connect yahoo.com [64.156.215.20:25] (1) ....... 07:11 02:00 SMTP-(cb51000700f83b4e) rl-recv: Blocking call cancelled 07:11 02:00 SMTP-(cb51000700f83b4e) 07:11 02:00 SMTP-(cb51000700f83b4e) SMTP_DELIV_FAILED 07:11 02:00 SMTP-(cb51000700f83b4e) >QUIT ....... 07:11 02:03 SMTP-(cb51000700f83b4e) rl-recv: connection reset 07:11 02:03 SMTP-(cb51000700f83b4e) 07:11 02:03 SMTP-(cb51000700f83b4e) requeuing e:\imail\spool\Qcb51000700f83b4e.SMD R0 T1 07:11 02:03 SMTP-(cb51000700f83b4e) finished e:\imail\spool\Qcb51000700f83b4e.SMD status=3 ....... 07:11 02:07 SMTP-(cb51000700f83b4e) MX connect fail "64.156.215.20" 07:11 02:07 SMTP-(cb51000700f83b4e) Connect yahoo.com [67.28.113.11:25] (1) This is only occuring when sending email to yahoo.com and happens maybe 1 in 25 times. We are sending about 10,000 individual emails to our members with yahoo email addresses in about a 6 hour period and a total of about 100,000 individual emails in total. Based upon my review of the archives, it seems like the imail server is waiting 4 minutes and then gives up rather then it being an MTU issue (http://support.ipswitch.com/kb/IM-19990924-DM06.htm). We are according to yahoo, on their white list. The problem it appears we are running in to it although this only occurs intermittently, each time it happens, that SMTP process basically hangs for 4 minutes. So we are winding up with 90%+ of the SMTP processes waiting for 4 minutes which dramatically slows down mail delivery performance and causing inbound message to hang in the queue for a few hours before getting delivered. A few questions: 1. Is this problem being caused by yahoo email servers? If so could they be doing this to throttle back email delivery? 2. Would it be worthwhile to decrease the SMTP timeout? (see http://support.ipswitch.com/kb/IM-20020919-DM01.htm) 3. Any other suggestions on this problem? Thanks! 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/
