Errors on phpmailer.log

[lpereira]

Hello Guys:
I'm having this recurrent error on /usr/local/nagiosxi/tmp/phpmailer.log

[10-27-2017 07:13:07] The following From address failed: [email protected] : MAIL FROM command failed,Message submission rate for this client has exceeded the configured limit
,421,4.4.2SMTP server error: MAIL FROM command failed Detail: Message submission rate for this client has exceeded the configured limit
SMTP code: 421 Additional SMTP info: 4.4.2SMTP server error: MAIL FROM command failed Detail: Message submission rate for this client has exceeded the configured limit
SMTP code: 421 Additional SMTP info: 4.4.2 (method=smtp;host=17X.XXX.XXX ;port=25;smtpauth=true;security=none), Referer: includes/components/xicore/xicore.inc.php > Event Handler Notification Email

after that i got a confirmation that email has been sent.

[10-27-2017 07:40:01] Message sent! (method=smtp;host=17X.XXX.XXX;port=25;smtpauth=true;security=none), Referer: includes/components/xicore/xicore.inc.php > Event Handler Notification Email

is this normal? are some emails being "lost"?

assistance is much appreciated.

regards.

[kyang]

Are you using an exchange server for SMTP?

MAIL FROM command failed,Message submission rate for this client has exceeded the configured limit

SMTP code: 421 Additional SMTP info: 4.4.2SMTP server error

When I looked this up, there are a few things that come to mind. Your receive connector is set to a very low limit.

[lpereira]

Yes, we are using Exchange as email server.

[npolovenko]

Hello, @lpereira.

Exchange server is set to X message rate limit. This means that the Exchange server can only send X emails concurrently. When a large number of emails that exceed the limit go through the mail server, it will fail due to the limitation.
https://confluence.atlassian.com/jirakb ... 93133.html

Do you have access to the Exchange server settings?

Looks like found a solution here:

https://somoit.net/exchange/exchange-42 ... ured-limit

Let us know if that fixed your issue.