Hi.
Thanks for all the help.
Will commenting out the line
host_auth_accept_relay = *
prevent unauthorized users, i.e. spammers, from routing their messages through
this machine (in combination with
Quoting Wakko Warner <wakko@???>:
>Are you using exim 3.x?
>exim 4 does not have this option.
exim -bV reports:
Exim version 3.35 #1 built 06-May-2004 06:57:22
Does exim 4 include better protection against spammers?
With respect to my question:
>host_accept_relay = 127.0.0.1 : ::::1 : *.accept-domain1.com :
>*.accept-domain2.com
>host_auth_accept_relay = *
Quoting Wakko Warner <wakko@???>:
>But to answer your question,
>that will accept relaying via auth for
>EVERYONE, not just your local users.
If I comment out the line
>host_auth_accept_relay = *
will that ensure that only users logging from the the urls/ip# listed under
host_accept_relay will be able to route messages?
TIA,
Joseph
Quoting Wakko Warner <wakko@???>:
> Keep me in CC.
>
> > > If I ran an ISPs mail server, I would:
> > > 1) disallow connections to port 25 from my customers
> > > 2) have my customers use port 587 (MSA), require authentication, and
> only
> > > allow the sender to be the authenticated sender (to prevent spoofing.
>
> > > NULL senders would be ok)
> > > 3) port 25 would never relay under any circumstances (that is excluding
> > > domains that I mx for)
> > > 4) deny access to port 25 to the internet from my customers. I would
> allow
> > > this for dedicated (static IP) users so they could host their own
> server.
> > > however, they would be responcible for security of their system (IE
> no
> > > open relay)
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