It should be possible to do this in an ACL running on RCPT TO, but I
would be very careful of finding unintended consequences...
Nigel.
> Peter Leeman <mailto:Peter.Leeman@moray.gov.uk>
> 20 March 2017 at 14:57
> Hi All
>
> Is it possible to block an email if both the sender and recipient
> domain are the same?
> Example - sender@???<mailto:sender@domain-a.com> to
> recipient@???<mailto:recipient@domain-a.com>
>
> The reason I am looking to do this is we are going to be using Exim to
> handle incoming/outgoing mail for a domain hosted on Exchange so any
> mail for domain-a.com being emailed from a mailbox on domain-a.com
> will never leave exchange. We still want a sender on domain-a.com to
> be able to email external domains, but want to prevent incoming emails
> destined for domain-a.com appearing as if they are coming from
> domain-a.com.
>
> The only alternative I can see at this stage is to have two Exim
> boxes, one to handle incoming the other to handle outgoing.
>
> Thanks for any help.
>
> Regards,
>
> Pete.
--
[ Nigel Metheringham ------------------------------ nigel@??? ]
[ Ellipsis Intangible Technologies ]
