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IMAP authentication fails after 11.0.9 upgrade

ktowle

New Pleskian
After many other problems, finally achieved a successful upgrade to 11.0.9, with everything working except ability to log in to (existing) email accounts via imap or pop. Have run mchk, restarted, etc. This started with the initial attempt to upgrade and has not changed since. Happens with webmail client as well as from externally. What might have broken between 10.4 and 11.0?

BTW, this isn't a client issue - nothing has changed with users or clients - direct telnet to imap on the server and direct entry of credentials fails - something isn't working with authpsa.
 
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