Philip Hazel writes:
>
> Mailers which permit senders to give incomplete addresses in the
> messages's headers that then get rewritten, e.g. getting
>
> To: ph10@cus
>
> rewritten as
>
> To: ph10@???
>
> after a DNS lookup also have to do all the routing before doing any of
> the sending, in order that all recipients of the message get a copy with
> the same headers in it.
There are no absolute guarantees about this last statement, though! If
sending is deferred for some recipients, then routing will happen again,
and may rewrite the headers again, if the DNS has changed, or the Exim
configuration file has changed, ...
Chris Thompson Cambridge University Computing Service,
Email: cet1@??? New Museums Site, Cambridge CB2 3QG,
Phone: +44 1223 334715 United Kingdom.
