One of my user have optonline account and i have configured his outlook. He can able to recieve email but can't send out. I have check with ISP if they are blocking the port and they said no.
I have tried telnet... telnet mail.optonline.net 25 ...it failed so that mean my firewall is blocking it. Optonline also told that i can use 587 secure port for them. Can you please advsie how can i open these ports. Should i even open 25 port or it's security risk. Thanks.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...