Nagios Support Forum

from maillog... Oct 22 08:56:05 nagios-01 postfix/pickup[114943]: D5BC0C447B: uid=496 from=<icinga> Oct 22 08:56:05 nagios-01 postfix/cleanup[8078]: D5BC0C447B: message-id=<20191022125605.D5BC0C447B@nagios-01.localdomain> Oct 22 08:56:05 nagios-01 postfix/qmgr[94257]: D5BC0C447B: from=<icinga@nagios...

I did some testing using Postfix own sendmail setup. I was able to received the email with no issue. However, when i try to trigger a downtime within Nagios I noticed the maillog file with the following info "to=<icinga@localhost.localdomain>" and "from=<icinga@tor1-nagios-01.localdom...

Email Notifications are not going through all of the sudden. The current version of Nagios Core i'm using is version 3.5.1 (older version ). i noticed an old post few years back with similar issue but it was eventually resolved. im wondering if someone can explain to me the resolution steps solving ...