Hello there,
We have been facing this problem for few weeks and could not find the right solution yet... One of our customers' system is experiencing a persistent email delivery delay (either for local or oustide recipients) and after making multiple changes to postfix settings, we keep on having the same error messages in the log: "fatal: shared lock active". The system is a postfix/mailscanner/ldap box. We noticed that the problem comes from messages with more than one recipients. Below is a trace of one message experiencing the delay problem. Thank you for your help, Zozime ----- Mar 30 07:51:30 mailserver MailScanner[11375]: New Batch: Scanning 1 messages, 4005 bytes Mar 30 07:51:30 mailserver MailScanner[11375]: Requeue: C884C37B49.AE6DE to 9978637B4A Mar 30 07:51:30 mailserver postfix/qmgr[27441]: 9978637B4A: from=<sen...@gmail.com>, size=3153, nrcpt=3 (queue active) Mar 30 07:51:30 mailserver postfix/local[24516]: fatal: shared lock active/9978637B4A: Resource temporarily unavailable Mar 30 07:51:30 mailserver postfix/local[24519]: 9978637B4A: to=<recipie...@mydomain.com>, relay=local, delay=0.26, delays=0.22/0.01/0/0.04, dsn=2.0.0, status=sent (delivered to maildir) Mar 30 07:51:30 mailserver postfix/local[26515]: 9978637B4A: to=<recipie...@mydomain.com>, relay=local, delay=0.27, delays=0.22/0.01/0/0.04, dsn=2.0.0, status=sent (delivered to maildir) Mar 30 07:51:31 mailserver postfix/qmgr[27441]: warning: private/local socket: malformed response Mar 30 07:51:31 mailserver postfix/qmgr[27441]: warning: transport local failure -- see a previous warning/fatal/panic logfile record for the problem description Mar 30 07:51:31 mailserver postfix/master[14638]: warning: process /usr/libexec/postfix/local pid 24516 exit status 1 Mar 30 07:51:31 mailserver postfix/error[26127]: 9978637B4A: to=<recipie...@mydomain.com>, relay=none, delay=1.2, delays=0.22/1/0/0, dsn=4.3.0, status=deferred (unknown mail transport error) Mar 30 07:58:38 mailserver postfix/qmgr[27441]: 9978637B4A: from=<sen...@gmail.com>, size=3153, nrcpt=3 (queue active) Mar 30 07:58:38 mailserver postfix/error[28929]: 9978637B4A: to=<recipie...@mydomain.com>, relay=none, delay=429, delays=429/0.01/0/0, dsn=4.3.0, status=deferred (unknown mail transport error) Mar 30 08:08:38 mailserver postfix/qmgr[27441]: 9978637B4A: from=<sen...@gmail.com>, size=3153, nrcpt=3 (queue active) Mar 30 08:28:38 mailserver postfix/qmgr[27441]: 9978637B4A: from=<sen...@gmail.com>, size=3153, nrcpt=3 (queue active) Mar 30 08:28:38 mailserver postfix/error[8535]: 9978637B4A: to=<recipie...@mydomain.com>, relay=none, delay=2229, delays=2229/0.01/0/0, dsn=4.3.0, status=deferred (unknown mail transport error) Mar 30 09:08:38 mailserver postfix/qmgr[27441]: 9978637B4A: from=<sen...@gmail.com>, size=3153, nrcpt=3 (queue active) Mar 30 09:08:38 mailserver postfix/error[25603]: 9978637B4A: to=<recipie...@mydomain.com>, relay=none, delay=4629, delays=4629/0.01/0/0, dsn=4.3.0, status=deferred (unknown mail transport error) Mar 30 09:26:13 mailserver postfix/qmgr[27441]: 9978637B4A: from=<sen...@gmail.com>, size=3153, nrcpt=3 (queue active) Mar 30 09:26:13 mailserver postfix/local[1821]: 9978637B4A: to=<recipie...@mydomain.com>, relay=local, delay=5683, delays=5683/0.06/0/0.06, dsn=2.0.0, status=sent (delivered to maildir) Mar 30 09:26:13 mailserver postfix/qmgr[27441]: 9978637B4A: removed
