Hello, the textops module has two new functions that help to search and remove headers based on regular expressions: - is_present_hf_re(regexp) http://kamailio.org/docs/modules/devel/textops.html#id2506553 - remove_hf_re(regexp) http://kamailio.org/docs/modules/devel/textops.html#id2506863 Particularly the second is useful to remove a bunch of headers in one step. For example, if you have several proxyes in your platform and you exchange information between them via X-Something headers, then you can remove all with: remove_hf_re("^X-"); Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com