Set up to block email by name

[Robson Rissato]

How to block all emails that come with: Zattini or Netshoes.

I already did it for domain, but they always change domain to advertise


ex : Zattini | Parceiros <marina_fontes_50509@viptechnology.com.br>

ex : Netshoes | Parceiros <mauriciofraga2261641@cotacoesgerais.com.br>

 

[Robson Rissato]

Netshoes - Parceiro <emm@fullsmart.com.br>


Can someone help me block

 

[heutger]

You should be able to set a RegEx in the rule system or create your own postfix header check. I currently use

/etc/postfix/header_checks

/^From:/ INFO
/^To:/ INFO
/^Subject:.*medtrade.*/ REJECT
/^Subject:.*user.*list.*/ REJECT
/^Subject:/ INFO

 

[Robson Rissato]

I did not quite understand how to do this, could you give me example using data above .... in my example ... please .... tks

 

[heutger]

I‘m unsure on how to do with RegEx. How to do with postfix checks I could provide, but it would require adjustments via SSH, are you able to do so?

 

[Robson Rissato]

yes

 

[heutger]

Ok, when you would need to follow the manual on how to copy the PMG template files and adjust the main.cf.in to include postfix header checks file.

In this file you need to do something like

/^From:.*zattini.*/ REJECT
/^From:.*netshoes.*/ REJECT

Hopefully, this is given in the header from. Otherwise you would need to check the body content.

After creating and including you would need to sync the templates as written in the docu.

 

[guletz]

Hi,

Never replay with a simple reject on unwanted mails. Use Discard. Even better use reject with a standard message like : xxx user unknown

 

[heutger]

Hi,

Never replay with a simple reject on unwanted mails. Use Discard. Even better use reject with a standard message like : xxx user unknown

Discard is forbidden in Germany as that suppress a mail and although being 99,9% sure, that it’s spam to be rejected, there is still a chance left to reject non-spam. Same for the message. I currently run good with this and had no trouble, but you’re free to do it different.