Re: [exim] Retry on 550 errors

> go and read the bit of the RFC on what is a temporary
> error and what is permanent. obviously nothing requires
> mail servers to obey the RFC, but it's a useful starting
> point.

You mean like:
"It is difficult to assign a meaning to "transient" when two different sites
(receiver- and sender-SMTP agents) must agree on the interpretation."
from RFC 2821 ?
J