Exchange 2010 Internet Connector FQDN still showing internal hostname
I've having e-mails bounce to certain e-mail addresses because RDNS isn't setup correctly. Even though I've specified the correct hostname in the FQDN box, I still get bouncebacks saying my server has announced itself as servername.local instead of awebaddress.company.com
Is there anywhere else to set this other than just the send connector properties on Exchange 2010?
Is there anywhere else to set this other than just the send connector properties on Exchange 2010?
mx3.thewebsite.co.uk gave this error:
"E6:Mail rejected because server_address does not match Reverse DNS." ASKER CERTIFIED SOLUTION
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Try the test as outlined here to confirm what is happening.
http://cbl.abuseat.org/helocheck.htm
Another option would be to recreate the Send Connector. Don't forget to restart Transport after doing so.
Simon.
http://cbl.abuseat.org/helocheck.htm
Another option would be to recreate the Send Connector. Don't forget to restart Transport after doing so.
Simon.
The email server EHLO response is saying its name is host,ariesnetworks.co.uk
The external DNS MX record says the name should be mail.thewebsite.co.uk
A reverse DNS lookup ping "-a option" to the IP address says the name is ds-90922.ds-10.com
Typically these names should match. That may be one cause.
Also, although you may be receiving email on 95.131.67.221, depending upon how your firewall is configured, outbound mail may actually be going out the default gateway of your router with a different IP address. To check that open a browser on the email server and check it with whatismyipaddress. Is that different? Also, do you have an SPF record in external DNS? You may have to set one up or it may be improperly configured.
220-host.ariesnetworks.co.
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
ehlo
500 unrecognized command
EHLO
250-host.ariesnetworks.co.
250-SIZE 52428800
250-8BITMIME
250-PIPELINING
250-AUTH PLAIN LOGIN
250-STARTTLS
250 HELP
C:\>nslookup
> set type=MX
> thewebsite.co.uk
thewebsite.co.uk MX preference = 10, mail exchanger = mail.thewebsite.co.
uk
mail.thewebsite.co.uk internet address = 95.131.67.221
> exit
C:\>ping -a 95.131.67.221
Pinging ds-90922.ds-10.com [95.131.67.221] with 32 bytes of data:
Reply from 95.131.67.221: bytes=32 time=189ms TTL=51
C:\>ping mx3.thewebsite.co.uk
Pinging mx3.thewebsite.co.uk [95.131.67.221] with 32 bytes of data:
Reply from 95.131.67.221: bytes=32 time=137ms TTL=51
C:\>