Hi,

We are using zoho desk and we ran into the issue below when replying to a ticket.

It turns out that the Reference field was the culprit as it contained a lot of references and ended up at 1154 characters and hence exceeding the 998 character limit per line specified in  https://datatracker.ietf.org/doc/html/rfc5322:

I looked at a couple of tickets and some ticket emails have no references at all, whereas others have lots. Is there something we can do on our end to avoid this error, or can you change something on your end?

Kind regards,

Kristoffer