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Messages are stuck in the queue in iis 6.

Posted on 2008-06-12
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Last Modified: 2013-11-30
I am using IIS 6 Default SMTP Virtual Server to relay message from the local computer.  I use to be able to send out through IIS but recently it has stopped sending and all of my messages just get stuck in the queue.  I have made sure that my firewall is allowing for SMTP to go out from port 25.  I have also tried removing all the emails from the queue and tried to send just one thinking that maybe one of the emails in the queue was blocking the rest but still no luck.  Does anyone have an idea of what else I can check or why this might of just stop working?

Thanks,

GabicusC
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Question by:GabicusC
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by:craigothy
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Depending on your ISP, they might have implemented a policy to block all customer outbound SMTP traffic except to their own mail server.  Sometimes this can be the case if you are not subscribed to a business class service from the ISP.  ISPs implement this port 25 blocking to try to cut down on their customers sending spam mail.  Just a thought.
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by:GabicusC
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craigothy,

Thanks for the reply.  We are a business and we are sending out using Exchange as well.  This is a server that is on our DMZ and we have tested the firewall with telnet and all looks good.
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by:Melih SARICA
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try smtpdiag tool in ur web server ... ( u can find it http://download.microsoft.com)

if u share the result with us.. maybe we can help..

r u relaying ur mails to ur exchange ?

Melih sARICA
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GabicusC earned 0 total points
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We have 3 IT guys here who always tell everyone in the Organizations if you are having trouble with your computer just restart it.  9 times out of 10 that will fix it.  However we seem not to be able to listen to our own advise.

We restarted the server and wow It started to work again!

Go Figures!!!

Thanks,

GabicusC
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