Wietse: >According to posttls-finger (below my signature), they support two >SASL authentication methods: LOGIN and XOAUTH2. > >Let's get rid of XOAUTH2: > > # postconf -e "smtp_sasl_mechanism_filter = login" > # postfix reload > >and see if that makes a difference.
Gerard E. Seibert: > Thank you for that quick and accurate answer. I was just wondering, is > this a bug in 'libsasl' or is it due to a change in Outlook? My setup > had been working for years without any errors. That is a good question for: - The Cyrus SASL team. - Microsoft. Postfix code knows nothing about how SASL works. Wietse