SMTP/POP3 Issue

My server's smtp queue is not working. Unable to send messages to few email ids however able to send to some and same in recieving. .
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kunalclkAsked:
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Eric CoryConnect With a Mentor OwnerCommented:
You could try using the following url. It has helped me troubleshoot smtp issues in the past.

https://www.testexchangeconnectivity.com/
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naushadkhanCommented:
Please give some more details e.g. to which email id you are trying to sent the mails. your smtp and pop settings etc.
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Alan HardistyCo-OwnerCommented:
Please have a read of my article and check your server configuration, reverse DNS and see if you are Blacklisted anywhere:

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/A_2427-Problems-sending-mail-to-one-or-more-external-domains.html
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kunalclkAuthor Commented:
alanhardisty, already cheked the id is not blacklisted, smtp, pop3 settings are usual. DNS is functioning,
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kunalclkAuthor Commented:
alanhardisty, already cheked the id is not blacklisted, smtp, pop3 settings are usual. DNS is functioning,
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Alan HardistyCo-OwnerCommented:
Can you please post your domain name and sending IP Address and I will take a look to make sure you are configured properly.

I will hide the domain name / IP Address to protect your identity.

Alan
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kunalclkAuthor Commented:
Alan If possible please tell few troubleshooting steps. I have already checked, I am getting ndr messages. I shall try the steps reason not posting domain name and ip because it can cause issues.
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kunalclkAuthor Commented:
thnx
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