• Introducing WebPros Cloud - a fully managed infrastructure platform purpose-built to simplify the deployment of WebPros products !  WebPros Cloud enables you to easily deliver WebPros solutions — without the complexity of managing the infrastructure.
    Join the pilot program today!
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.
  • The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.

Plesk mail formatting problems - Bare LFs in SMTP

W

webbit

Guest
Plesk for windows system notification messages and any auto-responder messages are not being correctly formatted with CR LF dot CR LF to end the message, instead they are ending with a bare LF which is strictly prohibited by 822bis and therefore any qmail server will not be able to receive the messages.

What this means is that if the domain that the notifications are being sent to is external to the plesk server then the notifications will not be delivered correctly and will sit in the outbound mail queue until they expire. The same situation occurs for all email autoresponders under plesk 7.5.3 and 7.5.4 for windows.

Please refer to this URL for further information on bare LF which was sent to me by the staff at mail enable who were able to diagnose this problem for me.

http://cr.yp.to/docs/smtplf.html

I have asked plesk support to diagnose and resolve this issue.

This is only a problem with plesk notifications and auto responder emails. Any webmail messages and authenticated smtp messages are able to be delivered without problem, so the problem is specific to the plesk mail formatting of these messages.

Is anyone else experiencing this problem?

Plesk for windows ver 7.5.4 and 7.5.3 show this problem on my server. Updating Mail Enable to the new version does not resolve this issue either as the mail is being formatted by Plesk.

Cheers
Doug
 
Just experienced this on a RedHat 7.5.4 installation.

Basically I noticed that I had no incoming email for about 4 hours, and when I looked at the log from qmail, it pointed me to the url you stated.

Restarting qmail delivered all incoming mail, but I'm not sure what to do to prevent this from happening again. Until just now, I had never seen this problem.
 
Back
Top