On 2022-04-25, Haines Brown <haines@histomat.net> wrote: > > I placed these two lines in ~./muttrc/muttrc > > set envelope_from_address=haines@histomat.net > set use_envelope_from=haines@histomat.net > > but still get 521 5.5.1 Protocol error om outgoing messages. > > I thought 'set use_envelope_from' took a boolean value (yes or no).