I have inherited a 2003 exhcnage server on 2003 domain controllers. the smtp banner being sent from the exchange server has its original server name appended but the mx record is using another name.
IE, smtp banner: servername.domain.com mx record: email.domain.com
99% of the time this is not an issue however, i have one domain we cannot send email to and i think this may be the cause.
We are running a barracuda in front of the email server. I am looking for the best and cleanest way to correct this issue. When i tried to change the banner on the email server it seemed to upset the barracuda and was no longer able to receive email.
can i add another mx record for the same server just with a higher priority? would this cause a problem or is it not permitted to have two mx records pointing to the same ip address?