Email address spoofing

[Maxime Gaudreault]

Hi

 

Is there anything to do against email address spoofing ? Many of our
customers have their email address spoofed. Then they receive a sh*t
load of bounce:

 

Mail delivery failed: returning message to sender

failure notice

Delivery Status Notification (Failure)

Undeliverable: 73% off for steve.messner

Returned mail: see transcript for details

 

My antispam gateway stops 80% of them but the customers receives like 10
of these / minutes. Another result of these bounce is my server being
overloaded which lead to greater delay for mail scanning.

 

Can I do something against that ?

 

Thanks in advance

 

Max

 

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