> I am trying to remove a soecial header from within acl_check_recpi: header
> disposition-notification-to.
> I tried this without any success
>
> condition = ${if def:disposition-notification-to: {1}{0}}
> headers_remove = disposition-notification-to
assuming you mean "def:h_disposition-notification-to:"
the rcpt ACL can't see any headers, so that condition is always false.
There's no harm in trying to remove a header that is not present, or
speculatvely scheduling removal of a header that has not yet been seen.
so just do
headers_remove = disposition-notification-to
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