Hi tom,
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> Does anyone have strong reasons to use one over another, or any other
> choice?
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Depends on the purpose of the name(s).
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Thanks, Jonas, that makes good sense. Based on that I should use "mail" and maybe "mail2" for my backup mail server.
One of the reasons I asked was I know Gmail used to use something like "
smtp.gmail.com" for its smtp server and thought that might be popular among sysadmins with such servers.
-Tom