> On May 22, 2019, at 1:50 PM, MRob <mro...@insiberia.net> wrote: > > Thank you for pointing it out. Why is default for the setting same as > header_checks? I don't understand the common need for smtp server to run the > same header checks on attachment headers, can someone explain?
This is backwards-compatibility. I agree that in most cases you'll want nested_header_checks to either be empty, or written specifically to handle some appropriate requirement, separate from the primary header checks. -- Viktor.