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Network Cut over
I work for a web design and hosting company. We have two networks in the office.
Sprint T-1 (which needs to go away... $$$$)
Comcast Business internet... which is what we want to switch to.
All hosted websites are actually being hosted off site for some reason. Not my call.
the email is being hosted in the office. the servers (win2k3) are all 192.168.... ips. there is a VPN/Firewall box that is forwarding the traffic to the appropriate servers.
I went to change the MX records of the domains through the various registration locations... godaddy registrar etc.
Changed the WAN Ip info on the VPN/Firewall from the sprint network to the Comcast network.
connected a laptop up to the comcast network (outside) the office network and started pinging mail.(whatever.com) i started getting replies from the new ip info after waiting about an hour or so. tried to send and recieve a test email from one of the changed mail domains and it could not find the server.
what did i miss?
Sprint T-1 (which needs to go away... $$$$)
Comcast Business internet... which is what we want to switch to.
All hosted websites are actually being hosted off site for some reason. Not my call.
the email is being hosted in the office. the servers (win2k3) are all 192.168.... ips. there is a VPN/Firewall box that is forwarding the traffic to the appropriate servers.
I went to change the MX records of the domains through the various registration locations... godaddy registrar etc.
Changed the WAN Ip info on the VPN/Firewall from the sprint network to the Comcast network.
connected a laptop up to the comcast network (outside) the office network and started pinging mail.(whatever.com) i started getting replies from the new ip info after waiting about an hour or so. tried to send and recieve a test email from one of the changed mail domains and it could not find the server.
what did i miss?
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aordal
Member Posts: 372
most public dns server requires 24-48 hours to update their records. you may just need to wait -
Optionsapd123
Member Posts: 171
Didn't read the whole post but guessing you forgot to lower your ttl on your dns entries from a standard 12 or 24 hours to a few minutes.
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Optionstornado42
Member Posts: 12 ■□□□□□□□□□
Didn't read the whole post but guessing you forgot to lower your ttl on your dns entries from a standard 12 or 24 hours to a few minutes.
when I was pinging mail.(......).com on a laptop from outside the network using different DNS servers it was replying with the correct (new) ip info so I would have thought that I was ok. -
Optionstornado42
Member Posts: 12 ■□□□□□□□□□
most public dns server requires 24-48 hours to update their records. you may just need to wait
when I was pinging mail.(......).com on a laptop from outside the network using different DNS servers it was replying with the correct (new) ip info so I would have thought that I was ok. -
Optionstiersten
Member Posts: 4,505
There are a lot of broken DNS servers out there that don't respect the TTL you set and just default to some number.Didn't read the whole post but guessing you forgot to lower your ttl on your dns entries from a standard 12 or 24 hours to a few minutes. -
Optionstiersten
Member Posts: 4,505
It couldn't work out what was the mail server from DNS? Or it couldn't connect to what was specified? Or it went to the old server still?tried to send and recieve a test email from one of the changed mail domains and it could not find the server. -
Optionstornado42
Member Posts: 12 ■□□□□□□□□□
It couldn't work out what was the mail server from DNS? Or it couldn't connect to what was specified? Or it went to the old server still?
could not connect to what was specified. the outlook was saying could not find mail.(.....).com -
Optionstiersten
Member Posts: 4,505
Run nslookup and do the following
set type=MX
yourdomainhere.com
mail.yourdomainhere.com
