Reply-To allows only one address.
send-hook "~L python-announce-list@python\.org" "\
set followup_to=no; \
- my_hdr Reply-To: Oleg Broytman <phd@phdru.name>, Python Mailing List <python-list@python.org>; \
+ my_hdr Reply-To: Oleg Broytman <phd@phdru.name>; \
my_hdr Mail-Followup-To: Oleg Broytman <phd@phdru.name>, Python Mailing List <python-list@python.org>"
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