Linux Administration Cookbook

How it works...

For more detailed output on what's going on when your message fails to send, you can usually check /var/log/maillog:

$ sudo cat /var/log/maillog Dec 2 11:35:12 localhost postfix/postfix-script[1120]: starting the Postfix mail systemDec 2 11:35:12 localhost postfix/master[1125]: daemon started -- version 2.10.1, configuration /etc/postfixDec 3 09:35:43 localhost postfix/pickup[11157]: 8E9A1206B117: uid=1000 from=<vagrant>Dec 3 09:35:43 localhost postfix/cleanup[11317]: 8E9A1206B117: message-id=<[e-mail]>Dec 3 09:35:43 localhost postfix/qmgr[1129]: 8E9A1206B117: from=<[e-mail]>, size=601, nrcpt=1 (queue active)Dec 3 09:35:43 localhost postfix/smtp[11319]: 8E9A1206B117: ...