Arch Linux

ttoirrah

Member

Registered: 2015-01-29

Posts: 59

cyrus-sasl-xoauth2-git breaks mbsync of FastMail

I use mbsync to manage my FastMail, gmx, and Zourit email accounts from the command line using neomutt (README.md). Recently, in my last attempt to continue including my Outlook accounts in that workflow, I'd installed cyrus-sasl-xoauth2-git. Some time later, I attempted to mbsync the 3 accounts that I still can on this Arch install, and saw that FastMail wouldn't:

$ mbsync fm
"IMAP command 'AUTHENTICATE XOAUTH2 ...=' returned an error: SASL authentication failed: not a valid access token format"

In my ignorance, I posted a ticket to FastMail but then noticed that I could mbsync FastMail from my backup Arch installed machine, and from both of my WSL Ubuntu installs. A lot of digging got me to

sudo pacman -Rs cyrus-sasl-xoauth2-git cyrus-sasl-xoauth2-git-debug

and after that mbsync works again for FastMail! So why's cyrus-sasl-xoauth2-git interfering with mbsync?

mackin_cheese

Member

Registered: 2025-01-07

Posts: 146

Re: cyrus-sasl-xoauth2-git breaks mbsync of FastMail

That's a question you should be asking upstream (the developer) since this package is a AUR package