Nagios Support Forum

It appears several others have already provided the indicators on this problem. I'm adding mine and offering to be the test subject for a fix since I can recreate the problem when needed on this server. My particular symptoms are as follows:
Multiple line notifications appear to fail more frequent.
Single line notifications appear to go through without a problem since most of the OKs are received.
The log indicates the notification is created via xi_service_notification_handler but the maillog and /usr/local/nagiosxi/tmp/phpmailer.log do not indicate the message was sent.

Many notifications issues were solved in 5.3.2, which was released earlier today.

The download is https://assets.nagios.com/downloads/nag ... 3.2.tar.gz.

Upgrade instructions are available at https://assets.nagios.com/downloads/nag ... ctions.pdf

Please let us know if the upgrade resolves your issue. Also, thanks for being proactive and uploading your profile.zip!

5.3.2 was a solid fix! Ran several tests which failed consistently prior without a problem. Thank You!

Excellent! Is it ok if we go ahead and lock this thread?

Sure, lock it up!