[FOR THE RECORD] CLIENTID Extension for IMAP/SMTP AUTH in dovecot

Michael Peddemors michael at linuxmagic.com
Thu Feb 13 00:40:33 EET 2020


More and more email clients are now starting to support the CLIENTID 
extension for IMAP, including 'libetpan', SaneBox, BlueMail, and now as 
of Thunderbird 68.5.0, available there as well.

This allows for a form of native two factor support, permission token, 
and/or access control to prevent the unauthorized use of email address 
and password. (For more information, please see the RFC Drafts, or reach 
out to us off list for details)

While the version of dovecot we use has supported it for some time now, 
we would like to make it available for more email providers who use dovecot.

For the record, for those interested in having your dovecot support 
transparent multi-factor, in your implementation, you will have to 
compile it with the patch listed in:

https://github.com/dovecot/core/pull/86

Once that is done, please feel free to reach out to us for the dovecot 
plugin, that enables CLIENTID to be supported in the IMAP protocol.



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