gillianb wrote: > >>> >>> STARTTLS > <<< 500 5.3.3 Unrecognized command > > Jun 22 11:15:01 ver-arc-ms1 courieresmtpd: > error,relay=::ffff:202.154.98.58,msg="502 ESMTP command error",cmd: XXXX > > As nothing has changed at our end, what could the receiver end be trying > to do that courier doesn't like?
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