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mail not going into queue

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wellerw

MIS
Mar 14, 2003
175
GB
I have problem where my email from outlook 2002 is not going into the outgoing queue in exchange 5.5, for some people it does, and for others it just doesnt appear, and therefore does not get sent.

does anyone know what could be happening here?

thanks
CJ
 
ok, ive just worked out that the mail seems to be queuing for some domains, but not others.

Ie - it will queue and send for yahoo.co.uk, but not for hotmail.com
 
ok, Im talking to myself here, but I think its the fact that were with BT, and thee seems to be a 'blocking' scenario going on with hotmail.

 
Often the only person on your level! [lol]

How this works is the mail is sent from outlook to exchange which queues them (keep hitting refresh and you will see every message sent go by). Exchange them tries to send these messages once it has figured out how to get it there.

Sometimes it can't figure out how this happens and it will sit in the queue until either it manages to connect or it times out.

There are many reasons why some messages don't go MX lookups, DNS errors, target server being down etc. So I'd need a few more details about the behaviour before helping.

If you're right about the blocking it won't be done by BT it would be Hotmail which has blocked mail from your domain.

Try using to help you trouble shoot this.

What exactly happens when you send mail to YourContact@hotmail.com? Do the mail leave Outlook? How long before you get a NDR? What does the NDR say?

Iain
 
Yes, thats what i meant - that hotmail are blocking mail sent via BT servers.

I've had several instances in the past where companies were blocking our mail as spam because of BT.

the original problem of mail not appearing in the queue seems to have gone now.

CJ


 
If your like Conner@CJ.Mail.BT.com all you can do is get in touch with either BT (good luck) or Hotmail to get you removed from their black list(s).

Iain
 
Good luck on getting Hotmail to remove you. We're trying. We've never had an open relay and only show on 3 out of 150 spam databases (no major databases and the ones we're on are as a result of netblocks of our ISP).

The nearest we can figure is that spammers spoof @hotmail.com addresses so then any NDRs from invalid addresses at our domain or any spam rejected by our spam filter gets bounced back to hotmail. Unfortunately we can't turn NDRs off because we need our clients to know when they're mail is bounced either because of an invalid address or because of it being interpreted as spam (it doesn't happen often, but it does happen - usually because the client likes to use decimal points or !!!!).

Some interesting reading here is at the link below, not that it will solve your problem.


Cheers.
 
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