Issue Plesk Email Notifications (two Content-Type headers)

[Paul Hermans]

The Plesk Notifications system sends out email with wrong syntax: two Content-Type headers, we get the following error message from our SMTP server:

Error: 550 Messages should have one or no Content-Type headers, not 2. (in reply to end of DATA command)

Email notifications are not devlivered anymore.

We upgraded Plesk from Onyx to Obsidian then after a recent Obsidian update I believe this problem started.

 

[sebgonzes]

Same problem reported Notification are html attachment file and not appear in body mail

 

[IgorG]

Plesk Help Center

support.plesk.com

 

[sebgonzes]

Plesk Help Center

support.plesk.com

Hello
It can be an temporarily solution, but plesk had to solve it.... It's not possible to require the reconfigure mail server to all clients to ignore double header error.