Problem with rule when subject is multi lines

[f4242]

Hello,

I created a rule for incoming mail that add a suffix to the mail subject. This usually work fine but I found that some mails are not being tagged. I found that theses mails have something in common. The "subject" field contain a line return so the subject is displaying on two or more lines when I look at the mail headers.

A sample mail that expose the problem (message is not tagged):

telnet mail.myorg.tld 25
EHLO mail.example.com
MAIL FROM:<me@gmail.com>
RCPT TO:<me@myorg.tld>
DATA
Subject: testing123
   b

asdf
.

The problem seem to be related with the folllowing "what" exclusion rule, because the message is tagged correctly if I don't set this condition in my mail rule:

So this rule should not execute only mail when subject already contain my "[EXTERNE]" tag.

Is there something I can do to avoid this issue?

Thanks!

pmg-api/5.2-7/9943bd5d (running kernel: 4.15.18-25-pve)

 

[dcsapak]

what do you want to match exactly?
afaiu you want to match all mails which do not start with '[EXTERNE]' ?

if yes, i would change the regex to : ^(?!\[EXTERNE\])

 

[f4242]

I want to match any mails not containing the string "[EXTERNE]" at all in the subject field. The goal is to tag only a message if the tag is not already present (when users are receiving a reply of a reply, the tag would be already there).

 

[dcsapak]

ah yes, after reading it again of course ^^
you can try with this regex:

^((?!\[EXTERNE\])(?:.|\r?\n))*$

i guess this should be what you want...

 

[f4242]

It works great! Thank you!

 

[f4242]

One more thing, the regexp doesn't match when the subject field is missing. How could I mark my message as external if the subject field is missing? If I don't add the "what" exclusion rule it works fine and the subject become "No Subject [EXTERNE]".