body modification for incomming mails

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kropla

Member
Jan 28, 2021
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Hello
is there any way to add in body message (ie this e-mail comes from an external sender -> click on the links only when you sure )

thanks for reply
 
kropla said:
is there any way to add in body message (ie this e-mail comes from an external sender -> click on the links only when you sure )
Click to expand...
a) you can add a text at the bottom of the mail with a 'Disclaimer' action
b) you can modify the Subject (or any other header) with a Modify Field action

I hope this helps!
 
Stoiko Ivanov said:
a) you can add a text at the bottom of the mail with a 'Disclaimer' action
b) you can modify the Subject (or any other header) with a Modify Field action

I hope this helps!
Click to expand...
thanks for reply ...
can you tell me where to find it or how to do that ? i mean ... i made the filter rule (with the lowest prio) set action accept and deliver ... but text from disclaimer is on the bottom ... it is possible to have it on the top of body mail ?
thanks !
 
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kropla said:
thanks for reply ...
can you tell me where to find it or how to do that ? i mean ... i made the filter rule (with the lowest prio) set action accept and deliver ... but text from disclaimer is on the bottom ... it is possible to have it on the top of body mail ?
thanks !
Click to expand...
Hi there!

Yes... this "disclaimer" action is good for adding "footers" but when a mail is longer nobody will actually see the "warning - external mail".

Changing SUBJECT is... well, not good enough... as you "modify" the original subject and when you do this on a "conversation" you end with a lot of repeated subject prefixes (like: Re: [EXTERN] Re: [EXTERN] Re: [EXTERN] Sample mail subject) and you can really be "expressive" in the subjext as you have to keep is short and have no options to apply any style to it (colors, fonts, size...)

Would it be possible to add some sort of "prefix message" or something which would be inserted at the beginning of the mail?
Any hint on how could this be modified in the code (if at all possible)?

best regards,
M.Culibrk
 
I like to rewrite the entire body, especially emedded e-mail links so you cannot click them anymore.

Edit: Done
I

[TUTORIAL] Thread 'Rewrite URLs in mail bodies based on SpamAssassin score'

Introduction

Proxmox Mail Gateway has no built-in action to rewrite the mail body — it can block, quarantine or tag mails, but it cannot neutralise links in suspicious messages. This howto shows how to add a custom Defang action module that rewrites http:// and https:// URLs to hxxp:// / hxxps://, making links inert while still delivering the mail.

The action integrates natively into PMG's rule engine, so you can combine it with any "What" matcher — most usefully a SpamScore condition — to only defang mails above a certain threshold.

How it works

The module...
 
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