Worked fetchmail configuration form 10.09.14

==== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Linux/BSD distribution name and version:
- Related log if you're reporting an issue:
======== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Linux/BSD distribution name and version:
- Related log if you're reporting an issue:
====

- 0.8.7
- MySQL
- Linux debian 7.0 Wheezy

file /etc/fetchmailrc

set no bouncemail
set no spambounce
set properties ""
set logfile /tmp/fetchmail.log
set daemon 900

poll mail.externalserver.ru proto pop3
     user "externaluser" with pass "pass" is "mybox@iredmail" here
     ssl

U can start or add in cron

fetchmail -p POP3 -a -S U_IP_OF_IREDMAIL_OR_DOMAIN -f /etc/fetchmailrc > /tmp/fetchmail.log

don't forget about

chmod 700 /etc/fetchmailrc