Not able to connect with IMAP services

[nidhinjo]

Problem:

It have problem when connecting with IMAP services but it have response when try to do telnet test with port 143 or 993.

Symptoms:

Keeps have error found at Plesk maillog located at
/usr/local/psa/var/log/maillog

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Oct  4 09:28:43 server courier-imaps: Maximum connection limit reached for ::ffff:11.22.33.44
Oct  4 09:28:43 server courier-imaps: Maximum connection limit reached for ::ffff:11.22.33.44
Oct  4 09:28:44 server courier-imaps: Maximum connection limit reached for ::ffff:11.22.33.44
Oct  4 09:31:48 server courier-imaps: Maximum connection limit reached for ::ffff:11.22.33.44
----

Caused:

It is because too many connections from single IP to mail server

Resolution:

Adjust the MAXPERIP in /etc/courier-imap/imapd
Default value is 4

and then restart the IMAP services by

Code: [Select]

#> plesk sbin mailmng-service --restart-service --mail-component authdaemon --mail-component pop3 --mail-component pop3s --mail-component imap --mail-component imaps
Hope this will fix the issue
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