Spamming and ssh attack from a customers

[Tarig Ahmed <tariq198487 () hotmail com>]

hi all

I am receiving emails from many servers saying that: this ip (from a  
customer) is trying to attacking one of our servers.

Is it appropriate to filter ssh, telnet, and smtp from my customers,  
or just forward the message to my customer contact persons?

Thanks in advance..

Tarig Yassin Ahmed