Hi jimp,
thanks for your answer. i have not set up that POP3-Connector - but i think i will have a talk to my collegue, to set the interval higher than 1 minute. (3 minutes or so).
the problem: at the microsoft pop3-connector i can not set up that the e-mail mailboxes were checked once by another - it will always do the check on all mailboxes the same time.
i have set up now some values at the "Default LAN->Any"-Rule:
Simultaneous client connection limit: 4096
Maximum state entries per host: 1024
Maximum new connections / per second: 512/1
State Timeout in seconds: 180
Global Settings:
Firewall Mode: conservative
Max. State Table Size: 20000
I still get the POP3-Errors. I set up the POP3-Connector to 2 minute interval - in a few weeks i will set up a direct SMTP MX record to our exchange server.
I also had this errors in the windows event log while we had the ZyWall 10 - but as i said, i set up the maximum connections per client to 1024 - and the errors didn't came back again - till i installed pfsense last week. i was looking for a secure firewall and gateway - whoch pfsense is. but these errors, i'm sure, are triggered by pfsense…
thanks + regards
fabian