Jonas Meurer wrote:
>
> the problem is that newsletters are sent through this server, and some
> of them have more than 50 t-online addresses subscribed. and for some
> reason the error happens quite often.
> i will see whether i can get one of the mails that produced such an
> error. but the error occurs only for t-online addresses, all others
> receive the newsletter.
Is it possible that t-online is adding a header containing all the RCPT
addresses on their server, and that's the line it's rejecting because
there are too many recipients? If so, then setting max_rcpt on your SMTP
transport might solve the problem.
http://exim.org/exim-html-4.62/doc/html/spec_html/ch30.html
- Marc