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all IMAP service in the mail servers should contactable via telnet by the port ?

Hi Experts,

I was trying to trouble shoot IMAP service on a mail server. But it's not connecting via telnet. I was trying to perform http://support.microsoft.com/kb/189326  (But SMTP port connects via telnet without any issue)

Some mail servers denied connecting to IMAP port via telnet ???

If so how can I remotely verify the IMAP service. ( we don't have access to the mail server any way)

Thanks a lot for your time !
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Shakthi777
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Shakthi777
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3 Solutions
 
PYThePorkpieCommented:
You don't mention the version but if SMTP works on port 25 and IMAP fails on 143 then its most likely the MSExchange IMAP service is not started on that server.
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Shakthi777Author Commented:
Ya, I'm sure about the port numbers.

I can't telnet to the IMAP port, but I can telnet to the SMTP port on the same email server (EXCHANGE) which really means IMAP port on the particular server is down ??
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PYThePorkpieCommented:
Yes it suggests that the Microsoft Exchange IMAP4 service is not running. You've proved the server is running by your success in getting an SMTP response. The IMAP4 service is set to manual by default as not everyone wants to use it.
Hope that helps.
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Shakthi777Author Commented:
it's bit complicated;

The email functionality in the production server is not working but development server is good with the same email functionality which use IMAP(993) on the same email server.

I have telnet to 993 from both Development and Production servers but connection refused. I can't imagine that how I going figure this.


Any help would be highly appreciated.
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PYThePorkpieCommented:
Check out the following link on the Exchange team Blog. If you have verified that the service is running if its left in the default config its locked down to only accept SSL?TLS connections.
http://blogs.technet.com/b/exchange/archive/2007/05/16/3402642.aspx
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Shakthi777Author Commented:
tnx !
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