Re: Filter mail with dangerous attachments

Thanks a lot. On Wed, Dec 14, 2022 at 3:27 PM Wietse Venema wrote: > Tan Mientras: > > 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?* > > An example from https:

Re: Filter mail with dangerous attachments

Wietse Venema skrev den 2022-12-14 15:26: An example from https://www.postfix.org/header_checks.5.html this does not work when exe file is in mime compressed archives clamav unpack archived data to find exe files, postfix can only match on mime

Re: Filter mail with dangerous attachments

Tan Mientras skrev den 2022-12-14 15:22: 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? no postfix is not a content filter, use clamav with 3dr party signatures https://sanesecurity

Re: Filter mail with dangerous attachments

Normally you would use a content filter like Amavis along side postfix accomplish this. From: Tan Mientras Sent: Wednesday, December 14, 2022 9:22 AMTo: postfix-us...@cloud9.netSubject: Filter mail with dangerous attachmentsHello Excuse my generic question, but I dont know where to startIs it possi

Re: Filter mail with dangerous attachments

Tan Mientras: > 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?* An example from https://www.postfix.org/header_checks.5.html /etc/postfix/main.cf: head

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