I have asked about this before but wanted to ask something else.
On my BQ machine, I have reserved the primary IP address of the machine to
run my website on. The second IP address runs another personal site. I
have allocated virtual sites to the third IP address.
I have reverse PTR's set up for my two sites which resolve to the
appropriate IP addresses. DNSreport.com still showed a warning for SMTP
mail server host name in greeting. I even edited the sendmail.cf file as
was suggested here before.
It appears that with DNSreport.com's mail server test, the BQ server
responds with the primary IP address of the server rather than with the IP
address associated with the particular domain in question.
I edited my DNS settings to make mail.uhostme.com resolve to the primary IP
address of the machine rather than the IP address assigned to the site.
DNSreport.com was happy with that, reporting that it passed the SMTP
greeting check.
My question is: is there any concern configuring DNS to work this way,
resolving the IP address to something other than the IP address associated
with the website in question? Particularly with regard to having an SSL
certificate associated with the website's IP address and secure mail
services running on a different IP address.