How di i block Gmail IMAP ,pop and smtp

[#1]

Hai , I am using fortigate 100A firewall with OS 4 i blocked GMail access to users by using URL block ,but i have a problem with users who are using applications like thunderbird and outlook to access GMAIL They are using pop.gmail.com and smtp.gmail.com and accessing gmail through these applications Please please tell me if there is way to block the users from using gmail Note:Ports 995 and 465 are enabled to all users,as we have our email configured in Outlook express which uses these ports thanks in advance

[doshbass]

Ports 995 and 465 are generally encrypted and your 100A cannot do decryption of this. Your probable best solution is to create a specific blcok rule to the FQDN objects pop.gmail.com and smtp.gmail.com

[RickP]

Your probable best solution is to create a specific blcok rule to the FQDN objects pop.gmail.com and smtp.gmail.com

Or perhaps specify the allowed mail server address in the firewall policy that allows POP3 and SMTP access. All others will then be blocked.

[ciscokid1903]

Hi Ravivarma I have a rule from internal to wan that is set to allow pop and smtp from my mail enabled clients then have a rule directly below it that is set to deny all other smtp and pop traffic. I had to do this as my final rule for internal to wan is allow any any . So it would not be blocked by a default deny any any rule.