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Mail rejected: "550 Maximum line length exceeded" error

Started by MoonCat, August 01, 2020, 08:34:13 PM

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MoonCat

Hello,

I have the following issue w/ my forum (2.0.17).

After the user is registered (immidiate registration), I'm getting the following email:
====
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:

xxx@gmail.com
host 5817.smtp.antispamcloud.com [130.117.54.107]
SMTP error from remote mail server after end of data:
550 Maximum line length exceeded (see RFC 5322 2.1.1).
====

How would you approach debugging this issue? I have no idea what email is being sent from the forum that violates 1000 character rule.

Thank You!

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