Hello,
Recently i had a problem with Godaddy when all user where blocked and unable to reach my server on port 53 when using UDP protocol.
After few hours the problem was fixed and all users where able to connect again. But 1 user is still unable to reach the server.
This is the 3rd day, he tried another ISP, it worked for few hours and down again. It is working only when he use VPN.
He tried to telnet my ip on port 25:
220-We do not authorize the use of this system to transport unsolicited, 220 and/ or bulk email.
I tried to whitelist his ip in cPhulk and allow it on iptables firewall.
All packets timeout when he ping my server ip.
Any idea how can we identify where is the problem coming from ?
Thanks
Recently i had a problem with Godaddy when all user where blocked and unable to reach my server on port 53 when using UDP protocol.
After few hours the problem was fixed and all users where able to connect again. But 1 user is still unable to reach the server.
This is the 3rd day, he tried another ISP, it worked for few hours and down again. It is working only when he use VPN.
He tried to telnet my ip on port 25:
220-We do not authorize the use of this system to transport unsolicited, 220 and/ or bulk email.
I tried to whitelist his ip in cPhulk and allow it on iptables firewall.
All packets timeout when he ping my server ip.
Any idea how can we identify where is the problem coming from ?
Thanks
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