[Solved] pop3-login: Maximum number of connections from user – IP exceeded

In some strange situations you may get “connection refused error” while trying to access the server via POP3. The error details are pasted below:

Error:

Maximum number of connections from user - IP exceeded

Form server log:

22 03:55:10 host5 dovecot: pop3-login: Maximum number of connections from user+IP exceeded (mail_max_userip_connections=3): user=, method=PLAIN, rip=111.119.12.12, lip=229.222.220.17

Solution:
You can see that the root cause of the error from error log 🙂 . Yes,  the “mail_max_userip_connections” value in the ‘dovecot’ configuration file is causing the issue.
Edit the configuration file and change the value to a higher one to resolve the issue.

vi /etc/dovecot.conf
---
mail_max_userip_connections = 3
---

That’s it!!

Arunlal Ashok

Linux Server Administrator. I'm managing Linux servers since 2012. I started this blog to share and discuss my ideas. Check My Profile!! in uPwork (oDesk) and let me know if you need any assistance. Thanks!!

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