534 Message header size, or recipient list, exceeds policy limit.
sendmail: Unable to submit message.
How does the SMTP limit of 1022 characters per line translates to
Courier's limit of 5000 characters per line?
I'm asking this because if the SMTP limit of 1022 characters per line
can be streched to 5000 characters per line, it might be streched
further, can it? May be to a compile time configurable limit...
I think we've missed the issue here. (Or I've missed the issue. :-) When you
pump 5000 characters to sendmail without a newline in there somewhere then
courier is going to the think the entire thing is a header, right? So in
that case what you are hitting here is courier's compiled 5000 character
To disable it you need to edit courier/submit.C in the source code and remove
the check for 5000 characters in the header. Look for the line that says