How To Solve Thunderbird Cannot Connect To IMAP Server Messages?

On your Mozilla Thunderbird, there is a default number for the maximum IMAP connections. Generally, this default is set to 5. In some situations, you might see an error message related to the maximum number of IMAP connections.

Based on the specific IMAP configuration on your server (which hosts your account), you will see this error message. The message that you might see in many cases will be:

“Unable to connect to your IMAP server. You have exceeded the maximum number of connections. If so, use Advanced IMAP Server Settings to reduce the number of cached connections.”

Step : 1Navigate to the Edit menu. Go to Account Settings.
Step : 2Under your email account for which you have to modify the settings, choose Server Settings.
Step : 3Now, select Advanced.
Step : 4If the Maximum Number of server connections to cache has been set to 5, change it to 1.
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