Re: [exim] Subject rewriting

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Author: Jasen Betts
Date:  
To: exim-users
Subject: Re: [exim] Subject rewriting
On 2021-08-26, nb via Exim-users <exim-users@???> wrote:
> Hi,
>
> I need to change the subject when the message is considered as spam,
> *and* when there is an SPF problem.
>
> I use the following method:
>
> 1 - for SPF:
>      # remove old subject
>      remove_header=Subject
>      # create a new subject
>      add_header = Subject: *** SPF Error *** $rh_Subject:

>
> 2 - for SPAM:
>      # remove old subject
>      remove_header=Subject
>      # create a new subject
>      add_header = Subject: ***SPAM (score: $spam_score)*** $rh_Subject:

>
> It works fine when either of these two cases occur.
> But when both occur at the same time, I don't get the expected result.
> In this case, I get two "Subject" headers.


One way would be to build up the prefix in an ACL variable.

# 1 - for SPF:
      # add this to subject
      set acl_m_subj_prefix = $acl_m_subj_prefix *** SPF Error *** 


# 2 - for SPAM:
      # add this to subject
      set acl_m_subj_prefix = $acl_m_subj_prefix ***SPAM (score: $spam_score)*** 



      warn
        condition = ${if!eq{}{$acl_m_subj_prefix}}
        logwrite = subject rewritten
        # remove old subject
        remove_header=Subject
        # create a new subject
        add_header = Subject: $acl_m_subj_prefix $h_Subject:
    # discard the variable
    set acl_m_subj_prefix =


> Furthermore, would it be better to use $h_header?


If your exim configuration supports UTF-8, then yes.
(headers_charset setting in main configurarion)

--
Jasen.