How to Resolve PFSENSE firewall microsoft outlook problem

In pfsense firewall to implement squid proxy then outlook may not be worked for some times, web mails works fine. to resolve this issue



go-> System->Advanced->Firewal/NAT->


in NAT scorll down then you find Network Address Transalation->

NAT Reflection mode for port forwards ->check box 


select-> Enable(NAT+Proxy)



then outlook send and receive mails works fine


thanks