Gee...I thought the original "IMGate" thread was fun!! LOL

Todd Holt
Xidix Technologies, Inc
Las Vegas, NV USA
702.319.4349
www.xidix.com
 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chris
Langsenkamp
Sent: Monday, March 29, 2004 10:22 PM
To: [EMAIL PROTECTED]
Subject: Re: Re[2]: [IMail Forum] IMGate

My goodness what a lively group at this hour - shall I open a chat room
and let you all hash this out in there?

Chris
----- Original Message ----- 
From: Len Conrad 
To: [EMAIL PROTECTED] 
Sent: Tuesday, March 30, 2004 1:04 AM
Subject: Re[2]: [IMail Forum] IMGate



>If that error message is to be taken literally, the receiving server's
>DNS  is  broken.

It's not broken at all, and that is only one possible explanation in a
long 
list of possible causes for DNS queries to timeout.

On my MX, his domain resolved when he posted the error, so the 450 error

msg was temporary.

>This  is  a  mild  but non-negligible liability when
>relying  on  SAV

SAV is not the reason for his rejection.  reject_unknown_sender_domain
is a 
separate test from reject_unverified_sender

>--I'm  not saying it isn't fine to reject on SAV, just
>that  all  of  your  local DNS ducks need to be in a row for it not to
>suddenly  bite  you.

If DNS and/or us-to-them connectivity doesn't work, then ALL bets are
off, 
not just SMTP.

Len

_____________________________________________________________________

http://MenAndMice.com/DNS-training : Atlanta; SFO; Denver; NYC
http://IMGate.MEIway.com : free anti-spam gateway, runs on 1000's of
sites


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