smtp;554 5.1.0 Sender Denied

[Idan Plotnik]

Hi all,
 
I am using sendmail-8.12.8-9.90 and mailscanner 4.25
When I am sending a mail just from yahoo.com to my company I am getting
this error:
 
Reporting-MTA: dns; gateway at test.com
 
Final-Recipient: RFC822;test at test.com
Action: failed
Status: 5.0.0 (permanent failure)
Diagnostic-Code: smtp;554 5.1.0 Sender Denied

 

Someone know the reason ? 

 

Thanks


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