We are trying to do some header checks that block on both the From and Return Path header, but that also block some addresses with international characters in them. Characters like:
ù, ǔ, ɫ, ɇ, etc. I've read this page: https://www.postfix.org/SMTPUTF8_README.html and I understand that header checks are not UTF-8 enabled. My understanding of that page is that I must add *UTF8 to the beginning of the PCRE pattern. I'm a little unclear about what the pattern would look like. If I have a header check rule like this (with a domain without special characters), it works. /^(From|Return-Path):.*1105iee.com/ REJECT If I want to block a slightly different domain in the header check, for example: 1105iĕĕ.com, using the pattern shown above, can somebody please tell me specifically what needs to be added to the pattern to make it work? Thanks! Bryan