Thank you for your support. I have changed the regexp to
^X-Mailer: (?!Microsoft Outlook .*).*$
and I will watch for the next emails. I will also watch for the logs for a few days, then revert back to original file.
Thanks
On 02/12/2013 08:37 AM, Mark Sapiro wrote:
METU E-List Admin wrote:
$ bin/config_list -o - REGISTER | grep -A20 header_filter_rules header_filter_rules = [('^X-Mailer: (?!Microsoft Outlook .*)$', 7,
This regexp won't work. The negative lookahead does not advance the current position so your regexp says look for 'X-Mailer: ' at the beginning of the line not followed by 'Microsoft Outlook .*' but followed immediately by the end of the line, so it will only match a header like 'X-Mailer: ' not followed by anything.
What you want is
^X-Mailer: (?!Microsoft Outlook .*).*$
or just
^X-Mailer: (?!Microsoft Outlook .*)
or maybe even just
^X-Mailer: (?!Microsoft Outlook )