Could somebody briefly explain me the difference between
"Auto-Submitted" and "Autosubmitted" MIME headers?
RFC 4021 (Registration of Mail and MIME Header Fields) talks only about
Autosubmitted, with reference to RFC 2156 ( MIXER (Mime Internet X.400
Enhanced Relay): Mapping between X.400 and RFC 822/MIME).
On the other side, RFC 3834 (Recommendations for Automatic Responses to
Electronic Mail) "keywords for the Auto-Submitted header field", hence
Auto-Submitted shall have been defined before RFC 3834. RFC 5230 (Sieve
Email Filtering: Vacation Extension) relies on "Auto-Submitted".
only Autosubmitted is listed.
Thanks in advance for your opinion.