我正在尝试设置 OfflineIMAP 以将我的 Gmail 帐户同步到~/Mail/Gmail. 我~/.offlineimaprc从这里使用了一个非常基本的。但 OfflineIMAP 根本无法连接到 Gmail。这是我收到的调试消息（通过将 OfflineIMAP 运行为offlineimap -o -d imap：
OfflineIMAP 6.3.4
Copyright 2002-2011 John Goerzen & contributors.
Licensed under the GNU GPL v2+ (v2 or any later version).
Debug mode: Forcing to singlethreaded.
Now debugging for imap: IMAP protocol debugging
Now debugging for : Other offlineimap related sync messages
Account sync Gmail:
***** Processing account Gmail
Copying folder structure from IMAP to Maildir
Establishing connection to imap.gmail.com:993. …