[Users] How to configure milter on Zimbra (2)

[Barry de Graaff]

Hello All,

Since I cannot find documentation of milter in Zimbra ,

I installed a milter based on this:
https://iomarmochtar.wordpress.com/2017/09/13/zimbra-prevent-user-customizing-from-header/comment-page-1/#comment-138

Then it runs the following python when sending out mails:
https://github.com/barrydegraaff/zmbr_check_sender/blob/master/check_sender_access.py

I toss this in `def header(self, name, val):`:
                        self.logd('barry')
                        try:
                            	self.chgheader('Date',0,'1-1-1970')
                        except Exception, e:
                                self.logd('barry except'+ str(e))

And add:
        Milter.set_flags(Milter.CHGBODY + Milter.CHGHDRS + Milter.ADDHDRS)
Before:
        Milter.runmilter("check_sender_access", socketname, timeout)

Then in throws exception `cannot change header`, same when I try to add a header.


Can anyone tell me what am I missing here? Or point me to useful documentation? 
Otherwise I will dig some more.

Thanks a lot!

Kind regards, 

Barry de Graaff
Zeta Alliance Founder
zetalliance.org | github.com/Zimbra-Community