How to set Firewall for sendmail?

[Don]

At 11:07 AM 7/6/2005, you wrote:
>Am Mi, den 06.07.2005 schrieb Don um 19:49:
>
> > > > In FC4 how do I set the Firewall to allow port 25?
> > >
> > >Did you config the sendmail configs?
> > >Standard it binds to port 25 at 127.0.0.1 only.
> > >
> > >I guess that is your problem.
> > >
> > >Danny
> > How do I configure this?
>
>/etc/mail/sendmail.mc:
>
>dnl # The following causes sendmail to only listen on the IPv4 loopback
>address
>dnl # 127.0.0.1 and not on any other network devices. Remove the
>loopback
>dnl # address restriction to accept email from the internet or intranet.
>dnl #
>DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
>
> > Don
>
>Alexander
Thanks that worked, but now I have a relaying problem.  I have two systems, 
a.domain.com b.domain.com.  How do I allow a to relay thur b?
Don