Unable to send e-mail to a specific domain. (Full Version)

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njohn -> Unable to send e-mail to a specific domain. (10.Aug.2009 1:54:35 PM)

I am running 2007 exchange (1 server) and can send mail fine to all e-mail address except for 1 domain.  I been reading a lot about this error,
541 4.4.0 Primary target IP address responded with : "421 4.4.2 Connection dropped." Attempted fail over to alternate host, but that did not succeed. Either there are no alternate host, or delivery failed to all alternate hosts.
but have not found any help to my problem.  Any help would be greatly appreciated.

Thanks in advance.




Nazim -> RE: Unable to send e-mail to a specific domain. (10.Aug.2009 3:44:08 PM)

Are you able to telnet the remote domain servers?
Check the Outbound smtp logs which will give more info on this failure.




vishalramnani -> RE: Unable to send e-mail to a specific domain. (11.Aug.2009 3:21:53 AM)

You can find out the remote domain MX server by below command at CMD

nslookup
set type=mx
domain.com

you will be returned with MX records of remote domain. alternatively you can find the the MX records of that domain from number of sites. e.g. http://network-tools.com/nslook/

Thanks




vishalramnani -> RE: Unable to send e-mail to a specific domain. (11.Aug.2009 3:23:43 AM)

it is also possible that your domain or IP address is blacklisted by remote domain. you can have checked from them if possible.

Thanks.




njohn -> RE: Unable to send e-mail to a specific domain. (11.Aug.2009 8:09:48 AM)

This is the error I am hitting

,"Failed to connect. Error Code: 10060, Error Message: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 12.177.***.***:25"




Nazim -> RE: Unable to send e-mail to a specific domain. (13.Aug.2009 11:02:44 PM)

Check with the Administrator of the remote site and see if their firewall or spam filter is dropping your connection.




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