https://bugs.exim.org/show_bug.cgi?id=159
Martin von Wittich <martin.von.wittich@???> changed:
What |Removed |Added
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CC| |martin.von.wittich@???
--- Comment #3 from Martin von Wittich <martin.von.wittich@???> ---
I was also just looking for this. I want to route mail to the Zammad helpdesk
which supports X-Zammad-* headers:
https://admin-docs.zammad.org/en/latest/channel-email/fetchmail.html#supported-e-mail-headers-for-presorting
I want to add an X-Zammad-Ticket-Group header in my Exim router to certain
mails so that Zammad will put them automatically into the respective group. By
default though, Zammad will delete all X-Zammad-* headers of incoming mail for
security reasons because it doesn't trust the senders. It should be possible to
disable this, but then I need to make sure that untrusted senders cannot use
X-Zammad-* headers for nefarious purposes, so I need to delete all foreign
X-Zammad-* headers in Exim, which isn't currently possible. For the time being,
I've just hardcoded the known headers:
zammad_group_map:
driver = redirect
local_parts = lsearch;/etc/exim4/zammad.map
domains = +local_domains
# https://admin-docs.zammad.org/en/latest/channel-email/fetchmail.html
headers_remove = X-Zammad-Ticket-Priority : X-Zammad-Ticket-Group :
X-Zammad-Ticket-Owner : X-Zammad-Ticket-State : X-Zammad-Customer-Email :
X-Zammad-Customer-Login : X-Zammad-Article-Sender : X-Zammad-Article-Type :
X-Zammad-Article-Visibility : X-Zammad-Ignore
headers_add = X-Zammad-Ticket-Group:
${rfc2047:${lookup{$local_part}lsearch{/etc/exim4/zammad.map}}}
data = zammad
The risk here would be that Zammad contains further undocumented headers, or
later on adds new ones, and those wouldn't be filtered by my hardcoded list. So
a way to remove all headers matching a certain wildcard/regex would be really
useful here.
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