Author: George Schlossnagle Date: To: JDBitters CC: exim-users, Greg A. Woods Subject: Re: [Exim] How to treat SMTP error 550 (Relaying denied) as a temporary
failure
A 550 is a permanent error, though. If someone is returning you 550's,
either they don't want you sending them mail, or their mailer is
broken. Either way, you should know about it.
George
JDBitters@??? wrote: >
> If I understand the question correctly, the error message is not
> necessarily
> coming from the sender's ISP.
>
> In my experience, you can receive this message from a recipient SMTP
> server
> that is malfunctioning. In fact, this morning we received four such
> messages.
>
> I too would like to have a solution such as the one that the writer
> suggests.
>
> Any ideas?
>
> Thank you!
>
> J.D. (Jack) Bitters
