Forum Discussion
451 4.4.0 DNS query failed
We are having trouble sending email to a specific domain stating that the DNS query failed. I have verified from the server that I can query the DNS for mx record and can also connect to both mx ser...
Hi Ace95Hockey,
On the MMC, select your Exchange server(s) that is in the send connector list and go to properties.
1)Go to External DNS lookups tab, under the 'Use these DNS servers' manually add your DNS servers or try with 8.8.8.8 (make sure you have DNS port open to 8.8.8.8 in this case)
2) On the Send connector, go to properties, on the 'Network' tab, check the 'Use the external DNS lookup settings on servers with the transport roles' option and save.
3) Restart the Transport service and see.
Cheers,
Jude.
On the MMC, select your Exchange server(s) that is in the send connector list and go to properties.
1)Go to External DNS lookups tab, under the 'Use these DNS servers' manually add your DNS servers or try with 8.8.8.8 (make sure you have DNS port open to 8.8.8.8 in this case)
2) On the Send connector, go to properties, on the 'Network' tab, check the 'Use the external DNS lookup settings on servers with the transport roles' option and save.
3) Restart the Transport service and see.
Cheers,
Jude.