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Re: ml.org's dynamic DNS

Avery Pennarun writes:
> Another person posted a message demonstrating a "paranoid sendmail" that
> really does only allow forwarding from FROM addresses inside the domain.

That was me.  They're happy with 'HELO qwerty.blorg', though.  They just
answer by telling me my 'real' name and IP.

> To prevent spammers from forwarding spam via your site, it is sufficient
> to simply not allow forwarding from IP addresses "outside" to anything
> but "inside."

My thinking exactly.

> Presumably, the MAIL FROM checking is a feeble attempt to make spammers
> originating on the local site have to identify themselves,...

I suspect it of being a default feature acquired when they upgraded
sendmail (i'm guessing here).

> IMHO bright.net's mailer is broken.

BrightNet is broken.  I have no other choices, though, and many others are
in the same boat.  Besides, we're sure to hear "it works with Windows!".

I'm tempted to hack smail and add a 'mail_from' variable.
John Hasler
john@dhh.gt.org (John Hasler)
Dancing Horse Hill
Elmwood, WI

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