Footer with sendmail

[Jeremy Turner]

On Thu, 2003-11-13 at 09:55, Duane Attaway wrote:
> On Thu, 13 Nov 2003, Ben Coffman wrote:
> 
> > How would I make it so my sendamail could attach a footer to the bottom
> > of each outgoing e-mail message.
> 
> From the authority:
> 
> http://www.sendmail.org/~ca/email/more.html
> 
> How do I add a footer/signature to all (outgoing) e-mails?
> This is quite complicated. At first sight it might be simple: just "cat" 
> some text (taken from a file or whatever) to the end of an e-mail passing 
> through sendmail. However, there is a big problem: what is about 
> structured e-mails, i.e. MIME e-mails? These can be arbitrarily complex 
> and just "cat"ting a footer to the end of the body will break the MIME 
> structure. Hence, there is no easy solution to this problem!
> 
> If you know enough about MIME and some C programming, then take a look at 
> sendmail 8.11 and the libmilter/README. It now offers the functionality to 
> achieve this goal. However, it is unsupported by me and sendmail.org! 
> Please don't ask us questions about libmilter (however, we will fix bugs!) 

This subject also came up with the SpamAssassin folks.  One neat thing
would be to write the SpamAssassin report into the message body at the
top, rather than the headers.  Of course, you also run into MIME
attachments, and HTML email.  You'd end up having to write a report for
the MIME text and the MIME HTML parts.

A mailing list manager called Sympa (http://www.sympa.org) chooses to
write footers on only text email and does not write footers on HTML or
MIME-attached email.  Which means a text message with a GPG-attached
signature (such as mine) would not get a footer.

Jeremy

-- 
Jeremy Turner <jeremy at linuxwebguy.com>
The LinuxWebGuy