How to block anonymous@hostname.tld emails?

[ProWebS]

I see lots of customers on their php forms or even hacked scripts that send emails (spam and not only) which use the default address of the server anonymous@hostname.tld

how can I put a permanent block for the server NOT to send out emails witch have as sender "anonymous@hostname.tld" ?

 

[skype-Acuity.satya]

I see lots of customers on their php forms or even hacked scripts that send emails (spam and not only) which use the default address of the server anonymous@hostname.tld

how can I put a permanent block for the server NOT to send out emails witch have as sender "anonymous@hostname.tld" ?

Hi

where you want to block,I mean in your mail server or any personal free email id.

 

[ProWebS]

I mean for the server to block all OUTGOING emails (comming from php's mail) that have the default server address anonymous@hostname.tld

 

[skype-Acuity.satya]

hi it seems tuff, because once you blocked TLD users can not send email to that domain .