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解决ubuntu Email服务器imap连接超过最大限制方法

1、打开Courier-IMAP配置文件(/etc/courier/imapd):

cd /etc/courier/imapd

2、重新配置MAXDAEMONS和MAXPERIP数值

[…]

NAME: MAXDAEMONS:0

#

Maximum number of IMAP servers started

#

MAXDAEMONS=40

NAME: MAXPERIP:0

#

Maximum number of connections to accept from the same IP address

MAXPERIP=20

[…]
3、重启Courier-IMAP服务

/etc/init.d/courier-imap restart

参考链接: https://www.howtoforge.com/courier-imap-imapd-maximum-connection-limit-reached-for#error-courierimap-imapd-maximum-connection-limit-reached-for