Thunderbird unable to connect to the IMAP server [Closed]

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Greetings. I've been using thunderbird but today, it started to trouble as it give the error message saying ''unable to connect to the IMAP server
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50600
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Monday February 1, 2010
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Thank you
Hello

The outgoing message server is probably down for maintenance.

I suggest you be patient. Let us know in 8 hours.
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Tuesday December 4, 2018
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February 27, 2019
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Thank you
Unable to connect to IMAP server it means that you may have exceeded the number of connections to this server.
So, Change the default number of IMAP connections to 1.
Go here to change it:
Edit > Account Settings > Server Settings (under the mail account for which the setting should be modified) > Advanced > Maximum Number of server connections to cache.

I hope it will be helpful for you
Respond to Somitsvk