使用 isync 或 offlineimap 离线同步和阅读 Gmail

Question

我的目标是从 Gmail 帐户同步我的电子邮件并将它们编入索引以便在 Emacs 中搜索和阅读。后者尚不相关，因为我无法将电子邮件同步到我的笔记本电脑。

我是运行小牛队，所以在 Mac 终端工作。

我关注了 SO accepted answer and the answer in the same thread trying to use offlineimap, as well as a second method in this (more promising) tutorial on using isync（所以 mbsync）。两种方式最终都使用 mu 和 Emacs 的界面：mu4e.

证书未 read/interpreted 正确。我不知道为什么，因为我不明白错误信息。这是来自 offlineimap 的那个：

> OfflineIMAP 6.5.7
  Licensed under the GNU GPL v2 or any later version (with an OpenSSL exception)
Account sync Gmail:
 *** Processing account Gmail
 Establishing connection to imap.gmail.com:993
 PLAIN authentication failed: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure)
 LOGIN authentication failed: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure)
 ERROR: All authentication types failed:
    PLAIN: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure)
    LOGIN: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure)
 *** Finished account 'Gmail' in 0:01
ERROR: Exceptions occurred during the run!
ERROR: All authentication types failed:
    PLAIN: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure)
    LOGIN: [ALERT] Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure)
> 
> Traceback:   File
> "/usr/local/Cellar/offline-imap/6.5.7/libexec/offlineimap/accounts.py",
> line 263, in syncrunner
>     self.__sync()   File "/usr/local/Cellar/offline-imap/6.5.7/libexec/offlineimap/accounts.py",
> line 326, in __sync
>     remoterepos.getfolders()   File "/usr/local/Cellar/offline-imap/6.5.7/libexec/offlineimap/repository/IMAP.py",
> line 351, in getfolders
>     imapobj = self.imapserver.acquireconnection()   File "/usr/local/Cellar/offline-imap/6.5.7/libexec/offlineimap/imapserver.py",
> line 451, in acquireconnection
>     self.__authn_helper(imapobj)   File "/usr/local/Cellar/offline-imap/6.5.7/libexec/offlineimap/imapserver.py",
> line 366, in __authn_helper
>     "failed:\n\t%s"% msg, OfflineImapError.ERROR.REPO)

这是来自 mbsync 的那个：

> C: 0/3  B: 0/2  M: +0/0 *0/0 #0/0  S: +0/0 *0/0 #0/0
Error while loading certificate file '/usr/local/etc/openssl/certs/Equifax.crt': error:00000000:lib(0):func(0):reason(0)
C: 3/3  B: 0/2  M: +0/0 *0/0 #0/0  S: +0/0 *0/0 #0/0

我已经用 Homebrew 安装了所有东西，并且正在按照教程使用文件夹。问题出在证书上，但我不知道问题出在哪里。我在 Gmail 中设置了允许 IMAP 并允许连接安全性较低的应用程序。

我如何以不同方式处理证书？

Answer 1

对于 offlineimap 错误，Google 抱怨您没有使用 Oauth2。按照此处的解释，我解决了同样的 offlineimap 问题：https://github.com/OfflineIMAP/offlineimap/issues/228

您需要将 .offlineimaprc 配置为使用 Oauth2 而不是指定 username/password。以下是有关如何生成令牌的模板和说明： https://github.com/OfflineIMAP/offlineimap/blob/master/offlineimap.conf#L764

以下是重要设置：

auth_mechanisms = GSSAPI, CRAM-MD5, XOAUTH2, PLAIN, LOGIN
oauth2_client_secret = ...
oauth2_client_id = ...
oauth2_refresh_token = ...

使用 isync 或 offlineimap 离线同步和阅读 Gmail

Synchronise and read Gmail offline, using isync OR offlineimap

ssl-certificate

gmail-imap

mu