Your "mail name" is the hostname portion of the address to be shown on outgoing news and mail messages (following the  │
 │ username and @ sign) unless hidden with rewriting.                                                                     │
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 │ This name will also be used by other programs; it should be the single, full domain name (FQDN) from which mail will   │
 │ appear to originate.                                                                                                   │
 │                                                                                                                        │
 │ This name won't appear on From: lines of outgoing mails if you enable rewriting.                                       │
 │                                                                                                                        │
 │ System mail name:                                                                                                      │
 │                                                                                                                        │
 does it makes a diffrence what i fill in here like "Dmd Mail server" ??____________________________________________________________________________________________________ │
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