Essentially, I have a server that contains many vhosts. One vhost in particular is required to send mail from the address
email@example.com, however the reverse DNS for that server resolves to
hosting.server.com, and various fields in the email header pertain to the server instead of the vhost.
The software involved is PHP / Apache / Sendmail / CentOS 5.5
The domain vhost.com uses an email provider on a different server, so mx.vhost.com has no links to hosting.server.com or www.vhost.com other than by the domain name.
My concern is that this will increase the likelihood that email from this vhost is flagged as spam. Am I worrying too much about this or is this a real possibility.
Does anybody advice on how to configure a server or domain setup in this instance?
Also, can these references to
hosting.server.com be alleviated within the PHP application sending the emails at all, or is it purely a server configuration issue?