The mail_aliases table lists the domain's mail aliases recognized by sendmail.
The mail_aliases table has four
|Alias||Name of the alias|
|Expansion||List containing the members that receive mail sent to this alias; members can be users, workstations, or other aliases|
|Comment||Optional comment about the entry|
|Options||(See sendmail command description for options)|
Each entry has the following format:
To extend an entry over several lines, use a backslash.