On 21 Jan 2000 23:39:13 -0800 , Russ Allbery writes:
> cmikk <[EMAIL PROTECTED]> writes:
> 
> > Since our mail servers perform relaying for roaming customers, they
> > would have to be open to any IP address.  Ofmipd does not allow you to
> > control relaying, last I checked, so that would require some hacking.
> 
> Neither does qmail-smtpd, when it comes to that sort of setup.

More explicitly: qmail-smtpd can use control/rcpthosts,
ofmipd does not.  Therefore, ofmipd is an open relay,
no matter how you run it, whereas qmail-smtpd is
only open if you set RELAYCLIENT.

>  You have
> to front-end either one with something that checks whether to allow
> relaying.  What control mechanism are you using?  SMTP after POP is pretty
> easy, and I think there's stuff already on the qmail web site implementing
> it.

Well, we use tcpserver's -x option, for a static
list of known customer IPs (e.g. our dial-up pools).
We use a variant of Russ's open-smtp package for
roaming customers.

-- 
Chris Mikkelson  |      Problems are posed by fools like me;
[EMAIL PROTECTED] |      But only Heuristics can search a tree.

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