OT sendmail question

Furnish, Trever G TGFurnish at herffjones.com
Thu Nov 30 02:47:07 GMT 2006


> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info 
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf 
> Of Pentland G.
> Sent: Wednesday, November 29, 2006 12:00 PM
> To: MailScanner discussion
> Subject: RE: OT sendmail question

> For you Trever, something simpler should suffice, I'd have to 
> double check but the feature "relay_based_on_MX" would 
> probably do it, or something like it, only allowing relaying 
> for domains that you are an MX server for.

Doesn't relay_based_on_MX cause sendmail to relay for ***recipient***
domains that it's listed as an MX for?  As in, "sure, I'll accept your
message to bob at foo.com, because DNS says I'm an MX for foo.com"?

If so, that's not what I meant - I meant having the ability to reject an
outgoing message FROM bob at foo.com because foo.com isn't one of my
domains.  I hate when I see my internal relays being used to send a
message to bob at foo.com FROM bob at foo.com, knowing that foo.com may very
well reject the message because I'm not authorized to send mail from
their domain.

> Gary


> Furnish, Trever G wrote:
> > I don't have a solution for you, but that would be a very useful 
> > feature.  I'd love to limit the domains my internal users can send 
> > from, to combat the problem of ignorant developers who, for 
> example, 
> > set the envelope sender to an address we don't own in mail 
> sent from 
> > web forms.

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