Normally you would use a content filter like Amavis along side postfix accomplish this. 




From: Tan Mientras <tanimient...@gmail.com>
Sent: Wednesday, December 14, 2022 9:22 AM
To: postfix-us...@cloud9.net
Subject: Filter mail with dangerous attachments

Hello 

Excuse my generic question, but I dont know where to start
Is it possible to filter/detect/forbid mails containing invoice.exe as attachment at postfix level?

Thanks

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