Dear list, maybe this is only in my mind, but the log show below ........

@400000004a2a447c1e2b618c tcpserver: pid 6142 from 92.255.211.55
@400000004a2a447c299d57dc tcpserver: ok 6142 
ariel.sylcomed.com:192.168.1.251:25 :92.255.211.55::1837
@400000004a2a44822e117adc CHKUSER accepted sender: from <[email protected]::> 
remote <92.255.211.55:unknown:92.255.211.55> rcpt <> : sender accepted
@400000004a2a4483004d916c tcpserver: end 6142 status 0
@400000004a2a4483004d993c tcpserver: status: 0/100

means that [email protected] , user account that not exist in real life, can 
send mail from my server ?

If yes, how can avoid this ? and restrict the senders only at real accounts ?

Thanks for all your work....

Alberto Maffini
+39.348.3677402 

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