I have a user with $ sign that I dont see what doees that means

I run Microsoft SBS 2003 with service pack 2, we had a spammer with our mail server and I managed to get rid off it as it was jamming our qeue folder.
I am not sure what is the below information means.  I know we dont have a user with this name so where is this user coming from.
Special privileges assigned to new logon:
       User Name:      ADILA01$
       Domain:            ADILASATELLITES
       Logon ID:            (0x0,0x38AA56B7)
       Privileges:      SeSecurityPrivilege
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Is it a MACHINE NAME on your network?
basbosaAuthor Commented:
Yes, its the server name.
It's fine. It's just authenticating on the domain

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Microsoft Legacy OS

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