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Paul Walker
Paul Walker

Posted on • Originally published at on

mbsync, SASL and Gmail

Slightly more esoteric than usual; I'm posting this for my benefit as much as anyone else's!

I was just trying to set up mbsync to work with Gmail. I'd got most of the config copied from another provider, but kept getting an error about an invalid parameter:

Error performing SASL authentication step: SASL(-7): invalid parameter supplied: Parameter Error in /System/Volumes/Data/SWE/macOS/BuildRoots/533514bb11/Library/Caches/ near line 195
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I eventually figured out (from reading Jakub Kadlčík's clear post) that you need to tell mbsync which authentication method it should use - for some reason it doesn't correctly autodetect. I added in the AuthMechs line:

AuthMechs LOGIN
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Now it's able to log in fine.

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