mail server name? Does it matter?

[jim.thornton]

Just curious if it matters what I call my mail server name? I had a spare domain name that I wasn't using so I was testing Zimbra out and called it mail.sparename.com

Well, I got everything going and I'm wondering if I should now re-set everything up with another mail server name (say: mail.mycompany.com)?

I don't think it matters? My understanding is that it doesn't matter what the name of the server is because I can setup any domains that I want. For example, mail.sparename.com can host email accounts for:

me@example.com
you@abc.com
someone.else@theirname.com

Is this correct? If so, I'm wondering if I should use a more general domain name like: mail.emailserver1234.com

That way when somoene looks at the headers it is just a general mail server name that shows up.

What's the concensus here?