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In case of trouble with "too many simultaneous connections" (common with bluelight@auroville.org.in), reduce the "Maximum number of server connections to cache" (TODO: presumably on all clients); the default value is 5.  Account settings > Server Settings > Advanced.

Usage

Archive folder removal

Under IMAP, Archive is a special folder that cannot be removed in the Thunderbird GUI.  It may be removed by stopping Thunderbird, and removing the /home/user/.thunderbird/profile/ImapMail/server/Archives.sbd folder and Archives.msf file.  TODO: clarify when this works; it did not on Charles' person PolarisMail account.

Backup considerations

Thunderbird will rebuild .MSF files as needed if they are missing so no need to back them up.

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