Dear All , 

i have exchange Server 2007 standalone server and we are unable to receive email from outside only , we are able to send but we are unable to receive 

does the exchange certificate has effect since it is expired and i am working to renew it or there could be something else ?

no any changes happen except the certificate got expired .

Regards

hii,

Here i found some related threads that will help you in resolving this issue :

https://social.technet.microsoft.com/Forums/en-US/3d614815-b121-4fbb-a51f-019c82fa8ef4/exchange-server-2007-unable-to-receive-external-mail?forum=exchangesvrsecuremessaginglegacy

http://community.spiceworks.com/topic/150210-exchange-2007-unable-to-receive-external-emails

http://www.techrepublic.com/forums/questions/smtp-help-cant-receive-email-on-exchange-2007/

Regards.

thanks Paul for your reply ,

i have one issue , i am unable to telnet from outside to poet 25 is this mean i can receive email ? 

i have test to another company telenet from outside to port 25 and it is the same result not working but they are able to receive emails .

• Edited by JavaHeart 17 hours 2 minutes ago

Hello

check smtp inbound with https://testconnectivity.microsoft.com
and check eventlog and receive connector log

thanks Paul for your reply ,

i have one issue , i am unable to telnet from outside to poet 25 is this mean i can receive email ? 

i have test to another company telenet from outside to port 25 and it is the same result not working but they are able to receive emails .

• Edited by JavaHeart Tuesday, June 09, 2015 2:25 PM

hi Sneff_Gabor , 

thanks for your support , i have done the test and it is giving me  

" Testing TCP port 25 on host  to ensure it's listening and open " i am already checked the firewall and network team they said the port is open.

also ,  i am working on renew our exchange certificate is this could be the reason !!

is there any thing related to dns or public IP ?

thanks 

Hello

check 25 port with firewall team, ask to telnet to server 25 if work check receive connector log and restart transport agent on server

Hi,

What is the NDR received on the sender side ?

Please ensure that you have the correct DNS record(MX record,A record) for the Exchange Server.You can use Nslookup to check it.

Please refer to the below link :

http://support.microsoft.com/kb/200525

Then try to restart Microsoft Exchange transport service.

If it doesnt work ,I suggest you can check your receive connector configuration .

Please refer to the following article to configure your receive connector: https://technet.microsoft.com/en-us/library/bb738138.aspx?f=255&MSPPError=-2147217396

Best Regards,

David