Re: [courier-users] Relaying and smtp authentication (ssl vs.

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Matt Savigear writes:

> Hi,
>
> I'm having some trouble figuring out the best way to achieve my aims.
> Current situation: I have esmtpd accepting mail from outside my network
> and delivering it correctly, and it also relays for internal clients
> (i.e. those on 192.168.). I don't have authentication required.
>
> I'd like to add esmtpd-ssl, expose it to the ouside world and relay
> mail for any authenticated users, which seems to imply that I need to
> do two things:
> (a) Add AUTH_REQUIRED=1 to my esmtpd-ssl config file.
> (b) Allow relaying for external clients in smtpaccess. This seems to
> imply I need a different smtpaccess file for esmtpd and esmtpd-ssl
> otherwise the non-ssl one (without authentication) will become an open
> relay. Can this be done?

No. You don't need to do anything with smtpaccess. Authenticated clients
get relaying privileges automatically.

> Reading through the documentation I am also unclear on this one, a
> possible workaround: If I set AUTH_REQUIRED in my normal esmtpd config
> file, will that prevent mail delivery to my local accounts from external
> relays?

Yes.


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