Hello all, i hope someone can help.
We had an issue with our router and connection to our hardware firewall last night, that was rectified with a new router and new broadband settings (I believe the DNS was also changed) and we now have internet access and emails. But when we try to send to certain domains, we get a bounceback that it was rejected due to security policies.
I'm adamant nothing was changed on the server due to this, but i'm a bit stumped as to why this would suddenly happen when it was all working fine 2 days ago.
I have read that it could be to do with us now not being authenticated and the server we're sending to requires that. if that's the case, how to i rectify what happened yesterday?
Any help would be greatly appreciated.
Thanks.