Outlook not working behind centos firewall

alanpatrick · Post by **alanpatrick** » 2015/05/21 13:57:52

I have a centos server (firewall and squid proxy) that connects to the local LAN and to an ASDL router that connects to my ISP WAN. Our emails are hosted by an external email provider.The problem is that my outlook cannot send and receive emails when I have the centos server in place. When I remove it outlook can send and receive emails without a problem. What configurations do I need on the centos server?

aks · Post by **aks** » 2015/05/21 16:41:03

Perhaps have a look at https://technet.microsoft.com/en-us/lib ... 50%29.aspx for which ports must be allowed in and out?

CentOS

Outlook not working behind centos firewall

Outlook not working behind centos firewall

Re: Outlook not working behind centos firewall