Announcement - cPanel "message has lines too long for transport" Error

Dear Valued Clients,

Announcement detail:

cPanel published an error on exim on cPanel version v102.0.8 that under certain circumstances outbound email bounces with an error similar to the following:


This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its

recipients. This is a permanent error. The following address(es) failed:

  [email protected]

    message has lines too long for transport



Suggestion A:

1) Create a new email message (Not forward or reply existing email).

2) Copy & Paste the current email's content to new email message.


Suggestion B:

1) Clear then retype/paste the existing Subject.

2) Reply or Forward it.

Announcement status:

We will continue to follow up with cPanel on the patching for this error.

Best Regards,

Support Team
Technical Support Department