Create per-domain signatures and disclaimers

I add it to the signature field in Roundcube. Its in the identity section
 
But that only works when using Roundcube I presume? I think Tristan want's it server wide, with Exim, so when email clients are used, it's added too.
 
I am strongly of the opinion that this is a dangerous way to approach this idea, and that it is inherently wrong. You shouldn’t be using your MTA to alter the body of your emails in transit. This is the job of email clients and only email clients. The MTA doesn’t see an email in a way that a human sees it, and that means the logic of appending something to it cannot be as simple as “send body + this” without breaking something later (imagine the signature being appended to an encoded attachment, for example).

The mindset that leads people down this path is that they’re comparing these servers to services that bundle proprietary mail servers and clients together, including APIs with their giant brands so well known that email client developers would include support for them in all major clients (Gmail, Office 365, etc).

It would make more sense, to me at least, to build a mail service from the ground up than to try to manipulate an open source MTA to alter the body of an email in transit.
 
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Yup that was the general consensus in that Exim mailinglist thread as well, makes a lot of sense. With customers coming from these services that bundle proprietary mail servers and clients together it's sometimes difficult to explain though.
 
mxroute said:
It would make more sense, to me at least, to build a mail service from the ground up than to try to manipulate an open source MTA to alter the body of an email in transit.
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I agree with you, but it's not only company's that do that, also government's are using this method if I'm not mistaken.
I worked at a regional government, which was using Exchange. They needed, being governmental, such disclaimer to prevent being held responsible from certain statements from employees, which shouldn't do these statements in mail.

That is a very good and valid reason to do something like this. So somehow, as far as I know, they created some way in Exchange to add this text to every outgoing mail. This way the users weren't able to change this "signature" if they would by accident get config rights on their outlook.

So indeed I agree MTA's shouldn't be manipulated for this. On the other hand, since multiple company's and governments have a valid reason for adding a disclaimer, it might be good for MTA's to create something like this as an addon or something.
Just because almost everybody uses existing mail clients and won't start building things from scratch to achieve something like this.

I'm not that big into mail as you, but I wouldn't know how to achieve this in another way.
 
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