i cant recieve external mail

i can send and receive internal mails.
i can send external mail
But i cant receive external mail.
no any errors shows in sender
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Alan HardistyCo-OwnerCommented:
If all was working well before now and all of a sudden you get no inbound mail-flow, then you are probably suffering from BackPressure and you can resolve this quickly by reading my article, then tidying up your drives:


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Is this a new install or existing?
Suliman Abu KharroubIT Consultant Commented:
Please check yous smtp IP address is blacklisted  [spamer].

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Alan HardistyCo-OwnerCommented:
@Sulimanw - how exactly does being blacklisted stop inbound mail-flow?
Suliman Abu KharroubIT Consultant Commented:
Sorry, I thought that the problem is on the outbound mail flow not on the inbound.

I did not understand the question clearly.

sorry again.

@Mirceyhun: please ignore my above comment.
log onto the mxtoolbox.com and check your MX records.

Usually they will point to your ip address (google - whats my ip)
Although some companies will forward all email to a spam filtering gateway first, which will the relay the email onto your server.

If the MX records look fine, you can test the listening server using the telnet program.

If you feel comfortable doing so, post your domain name, and i'll have a look for you.

Alan HardistyCo-OwnerCommented:
@Sulimanw - No worries - I have been there myself from time to time through not reading the question properly.

Have you been at the festive juice already?
Is there another way of sharing this information in a more private manor?

I feel that until we have covered the basic's, we could be wasting time.
Enable the verbose logging on "default receive connector" and check the location "C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\Logs\ProtocolLog\SmtpReceive" in receive file and make sure you are getting incoming connections
and paste the NDR what your sender are getting
MirceyhunAuthor Commented:
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