Topic: Email Headers - 554 Message not allowed
I am trying to solve a problem with the automated emails. Some providers (mainly those using yahoo), often bounce the email with the message:
554 Message not allowed - Headers are not RFC compliant
Looking at the message header I now see that there are two 'From' entries, one at the top of the header, and another between the Content-Transfer-Encoding and the Return-Path.
I figure that these are all controlled and populated in the includes/mail.inc, but i am struggling to see what I need to delete to get rid of the second 'From' entry.
Any pointers would be gratefully received.
Senior IT & Records Officer,
13 St Andrews Crescent, Cardiff, CF14 3DB