Deorali
asked on
Error 421 service not available remote server has closed connection
Hi Exchange Expert,
This morning I had an inbound mail issue. Outbound email was fine and working normal. There was intermittent inbound mail issue. No modification on exchange server configuration.
Error returned:
Error 421 service not available remote server has closed connection. Even when I tried to telnet from outside I got an error 421 4.3.2 service not available.
It started working after I adding 0.0.0.0 - 255.255.255.255 to receive connector -receive mail from remote servers list.
It was working fine until yesterday without specifying this IP range.
Any thoughts?
Thanks,
Deorali
This morning I had an inbound mail issue. Outbound email was fine and working normal. There was intermittent inbound mail issue. No modification on exchange server configuration.
Error returned:
Error 421 service not available remote server has closed connection. Even when I tried to telnet from outside I got an error 421 4.3.2 service not available.
It started working after I adding 0.0.0.0 - 255.255.255.255 to receive connector -receive mail from remote servers list.
It was working fine until yesterday without specifying this IP range.
Any thoughts?
Thanks,
Deorali
ASKER
This is what I had before and the mail was flowing without having to add the new range 0.0.0.0 - 255.255.255.255
receiveconnector.JPG
receiveconnector.JPG
Is this an SBS Server?
Simon
Simon
There could be two possibilities:
1. Low disk space and for more see http://support.microsoft.com/kb/284204
2. Backpressure feature and for more see http://technet.microsoft.com/en-us/library/bb201658.aspx
1. Low disk space and for more see http://support.microsoft.com/kb/284204
2. Backpressure feature and for more see http://technet.microsoft.com/en-us/library/bb201658.aspx
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ASKER
Please close this ticket.
The error you have posted is exactly what I would have expected if the range was wrong.
Furthermore it would have had that range in by default, unless it is an SBS server.
Simon.