I have a strange issue with our 2013 Exchange. All internal users are getting these return errors if they send to one ( and only one) external domain. These emails work from personal email ( yahoo, gmail... etc.. )
The trouble domain email is hosted on googlemail and we are running an exchange server locally for our domain.
The email address you entered couldn't be found. Please check the recipient's email address and try to resend the message. If the problem continues, please contact your helpdesk
However, if I create a email contact in exchange, it works flawlessly. Far as I can tell, this error is on our exchange server. I can email these users from my personal email so I know they are valid addresses.
done all exchange server diags I could find after some internet searches telnet email, ( failed ) test-emailconnectivity cmdlet etc.... with no success.
nslookup results:
C:\Windows\System32>nslookup -type=mx xxxxxx.org
Server: Our Internal DC
Address: 172.x.x.x
Non-authoritative answer:
blacksburgrescue.org MX preference = 1, mail exchanger = aspmx.l.google.com
blacksburgrescue.org MX preference = 5, mail exchanger = alt2.aspmx.l.google.com
blacksburgrescue.org MX preference = 10, mail exchanger = aspmx3.googlemail.com
blacksburgrescue.org MX preference = 10, mail exchanger = aspmx2.googlemail.com
blacksburgrescue.org MX preference = 5, mail exchanger = alt1.aspmx.l.google.com
aspmx.l.google.com internet address = 173.194.X.X
aspmx.l.google.com AAAA IPv6 address = xxxxx
alt2.aspmx.l.google.com internet address = 209.85.X.X
alt2.aspmx.l.google.com AAAA IPv6 address = xxxxxx
alt1.aspmx.l.google.com internet address = 64.233.X.X
alt1.aspmx.l.google.com AAAA IPv6 address =xxxxxx
not sure where to go from here. I am not creating 200 plus exchange email contacts to make it work.
Can anyone point me where to look to correct this issue?
Thanks,
JD