[Techtalk] closed relay? (is that even what it'd be called?)

Laurel Fan laurel at freeshell.org
Tue Nov 20 17:26:13 EST 2001

On Tue, Nov 20, 2001 at 06:25:23AM -0800, Conni wrote:
> My husband uses Mac, and he's using Eudora as his mail client.  I've got
> RedHat 7 on my machine, and I'm using exim to send mail (MTA?  I get
> really confused around this stuff.)  We have RoadRunner, and he uses RR's
> mail server to send his mail.  Can I configure exim to relay from his Mac?

Yes, you can.  If you want exim to send mail from his Mac to arbitrary
machines (outgoing relay, I believe), you want to add the Mac's IP or
hostname to the host_accept_relay option; use something like
host_accept_relay = mac's.host.name
Or, to allow relaying from any local machine, put in the range of IP's
that your router assigns, like:
host_accept_relay =

(for anyone not familiar with that notation, the above line indicates
the IPs from; in words, it means something
like "all the IPs where the first 24 bits are the same as the first 24
bits of".  Conveniently, each of the 4 numbers separated
by dosts is 8 bits [which is why 255, 2^8-1, is the highest possible
number], so 24 bits means the first 3 numbers).

For a more in depth explanation of host_accept_relay and other
exim-relaying-related stuff, see the exim info manual (info exim), go
to the "Other policy controls on incoming mail" section, and then its
"Control of Relaying" subsection.

More information about the Techtalk mailing list