spf-discuss
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Re: [spf-discuss] Receiving and Forwarding DSNs

2006-12-07 07:51:14
On Thursday 07 December 2006 01:48, David MacQuigg wrote:
At 05:03 PM 12/5/2006 -0500, Stuart D. Gathman wrote:
On Tue, 5 Dec 2006, David MacQuigg wrote:
I don't understand the leakage worry.  Do you mean bounces to a fake

Return

Address?  How would you discover my private mail storage address?

Unless you've modified sendmail/postfix/whatever, it will notify the
sender of a failure to deliver to private(_at_)company(_dot_)com via the 
SMTP reject
message.

OK I see that.  Good point.
550 5.1.1 Test1 <private-mailstore-address(_at_)pobox(_dot_)com>... User 
unknown

We need to modify Sendmail's default behavior, so we don't automatically
generate a DSN with this private address in it.

Yes, but what do you do then?  If you silently drop messages, that is bad for 
the reliability of e-mail.  Since these receivers are people you have an 
established business relationship with, I'd suggest setting up a hold queue 
for such messages and then re-sending them or re-routing them as necessary 
after you've determined how to get the message to them.

Scott K

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