Exchange 2003 SMTP Started Internet Stops

Hello Experts

I have a SBS 20023.

Server been running for 2 years no problems.

This morning customer rings, internet is slow.  I think virus scan all computers, found a few but nothing bad.

Internet still SLOW

So i think hmm maybe server.   I stop the SMTP service.  Bang internet is all good again.  Start the service in a few seconds is't slow again.

I've checked all queues and queue location there is no emails wait there.

It's not relaying problem.  This server uses a pop connector to receive emails and port 25 isn't NATed.

I have no other idea what to try.  After some help.

Regards,
Up2DateTechAsked:
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supportsCommented:
it is possible tat the SMTP service is corrupted...try deleting that SMTP and creating a new one

I think you can get a copy of SMTP service and apply tat if removing and creating new doesnt work
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Up2DateTechAuthor Commented:
i can't delete it
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supportsCommented:
u can from ESM
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Up2DateTechAuthor Commented:
not the default one
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Up2DateTechAuthor Commented:
i have created a new one.  same problem though.
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supportsCommented:
Try this
http://technet.microsoft.com/en-us/library/bb124688%28EXCHG.65%29.aspx

Do run telnet server ip 25
and make sure you get the following
250-mail1.example.com Hello [172.16.0.1]
250-TURN
250-ATRN
250-SIZE 5242880
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-X-EXPS GSSAPI NTLM   *
250-AUTH GSSAPI NTLM
240-X-EXPS=LOGIN  *
250-X-LINK2STATE  *
250-XEXCH50   *
250 OK

If any of the above is missing smtp is not correctly working
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Up2DateTechAuthor Commented:
thanks for replies.  skiping a few steps going straight to rerun sp2 for exchange.


One thing though.  Telneting to the server i've never seen all that info before


Do run telnet server ip 25
and make sure you get the following
250-mail1.example.com Hello [172.16.0.1]
250-TURN
250-ATRN
250-SIZE 5242880
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-X-EXPS GSSAPI NTLM   *
250-AUTH GSSAPI NTLM
240-X-EXPS=LOGIN  *
250-X-LINK2STATE  *
250-XEXCH50   *
250 OK
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supportsCommented:
if u donot have following info that could mean 2 things
SMTP is not working correctly
Or its blocked
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Up2DateTechAuthor Commented:
ok problem fixed it's self over night.  
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supportsCommented:
Rerunning the exchange SP2 was an updated information available in solution provided
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Up2DateTechAuthor Commented:
ok since someone objected to the close of the job.  & that also the problem wasn't fixed after i thought it was.  I'll post what i did to actually fix it.


i installed MFCMAPI and deleted the SMTP TEMP table.

I also applied this hot fix. KB950757

So that fixed the problem not uninstalling and reinstalling.  Shouldn't hardly ever need to uninstall & reinstall a server app.  So i didn't try it.  Just reapplied SP2 for exchange.  Which didn't fix it.

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