Hide this message
Looking to compare latest NPM features with previous versions of NPM?
The NPM new feature summary offers a comparison of new features and improvements offered with this release.
E-mail alerts are not being sent. The Alert Error Log displays the following error:
The message could not be sent to the SMTP server. The transport error code was 0x800ccc15. The server response was not available.
This issue is typically related to port 25 being blocked by an application on your SolarWinds server. Many antivirus applications block traffic on port 25 by default, and this is typically the cause of this type of error.
To resolve this issue: