exchange crashes

We recently had to rebuild our exchange server and perform the exchange /disaster recovery option in order to get the exchange to install. Everything was fine for a couple days and now the server hangs up and we have to reboot in order to get email to flow again. I'm noticing a hugh amount of email in queue not going anyway. I'm thinking that the server hangs after the queque gets so full. Any ideas? There isn't any errors in the event logs. No virus protection at this time because I haven't had time to reinstall. Windows 2003, and exchange 2003 standard. Image of the queue attached.
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No you shouldn't lose any emails in the queue, I guess they are called SMTP connectors in 2003. Check out the links below they should help with configuring your SMTP connectors.
You might have re-create your send and recieve connectors.
cnmgtAuthor Commented:
How do I do that and will I loose any of the email in currently in queue?
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Viral RathodConsultantCommented:
Please refer this article by alanhardisty :

Why are my outbound queues filling up with mail I didn't send -'t-send.html

ckeshavSr. Infrastructure SpecialistCommented:
Check if you have errors in the event logs which is leading this to happen.
From looking at your screenshot your server is under a non-delivery attack. Reason I say that is a few years ago it happened to me from Hinet as well.

The link Viralrathod posted will help you get on track.

The thing that will slow you down is the clearing of the Queues... I had to go deleteing all those emails and it took a long time. There may be a tool out there but at the time I went through it didn't see one.
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