Hi Wietse, many thanks for the reply. egrep '(warning|error|fatal|panic):' /var/log/postfix/maillog | more gives:
Feb 15 00:26:51 mail postfix/smtpd[57622]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 01:36:55 mail postfix/smtpd[76958]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 02:46:56 mail postfix/smtpd[96792]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 03:56:58 mail postfix/smtpd[16926]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 05:07:00 mail postfix/smtpd[38555]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 05:12:41 mail postfix/master[88477]: warning: process /usr/local/libexec/postfix/smtpd pid 40147 killed by signal 11 Feb 15 05:12:41 mail postfix/master[88477]: warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling Feb 15 05:13:57 mail postfix/master[88477]: warning: process /usr/local/libexec/postfix/smtpd pid 40297 killed by signal 11 Feb 15 05:13:57 mail postfix/master[88477]: warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling Feb 15 05:42:49 mail postfix/master[88477]: warning: process /usr/local/libexec/postfix/smtpd pid 48696 killed by signal 11 Feb 15 05:42:49 mail postfix/master[88477]: warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling Feb 15 06:16:58 mail postfix/smtpd[58561]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 07:26:57 mail postfix/smtpd[78573]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 08:36:37 mail postfix/master[88477]: warning: process /usr/local/libexec/postfix/smtpd pid 98735 killed by signal 11 Feb 15 08:36:37 mail postfix/master[88477]: warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling Feb 15 08:37:37 mail postfix/smtpd[98894]: warning: hostname ip49-gw1.indonet.bogor.net does not resolve to address 202.159.24.49: hostname nor servname provided, or not known Feb 15 08:58:46 mail postfix/master[88477]: warning: process /usr/local/libexec/postfix/smtpd pid 5002 killed by signal 11 Feb 15 08:58:46 mail postfix/master[88477]: warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling Feb 15 09:41:15 mail postfix/master[88477]: warning: process /usr/local/libexec/postfix/smtpd pid 17629 killed by signal 11 Feb 15 09:41:15 mail postfix/master[88477]: warning: /usr/local/libexec/postfix/smtpd: bad command startup -- throttling I have added the following to main.cf: debugger_command = PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont; echo where; sleep 8640000) | gdb $daemon_directory/$process_name $process_id 2>&1 >$config_directory/$process_name.$process_id.log & sleep 5 and changed master.cf to: smtpd pass - - n - - smtpd -D and restarted Postfix. Do I just wait now until Postfix crashes again? Where is the crash log stored? -- View this message in context: http://postfix.1071664.n5.nabble.com/Postfix-crashes-with-signal-11-tp65224p65226.html Sent from the Postfix Users mailing list archive at Nabble.com.