email verification is now failing after upgrade to ubuntu 9.10

On to the next issue. email verification of users on my domain are failing (timing out). From tcpdump, I do see the requests coming in:

Code:

19:42:12.799062 IP sca-es-mail-1.Sun.COM.38088 > www.cocoanet.us.smtp: Flags [R], seq 2053583854, win 49640, length 0
19:42:12.886445 IP 89.47.53.188.57823 > www.cocoanet.us.smtp: Flags [S], seq 3198767588, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:19.022536 IP 89.47.53.188.57823 > www.cocoanet.us.smtp: Flags [S], seq 3198767588, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:24.806228 IP network-tools.com.2695 > www.cocoanet.us.smtp: Flags [S], seq 1261289271, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:27.704993 IP network-tools.com.2695 > www.cocoanet.us.smtp: Flags [S], seq 1261289271, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:31.028479 IP 89.47.53.188.59140 > www.cocoanet.us.smtp: Flags [S], seq 646469550, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:33.720280 IP network-tools.com.2695 > www.cocoanet.us.smtp: Flags [S], seq 1261289271, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:34.111499 IP 89.47.53.188.59140 > www.cocoanet.us.smtp: Flags [S], seq 646469550, win 65535, options [mss 1408,nop,nop,sackOK], length 0
19:42:40.246527 IP 89.47.53.188.59140 > www.cocoanet.us.smtp: Flags [S], seq 646469550, win 65535, options [mss 1408,nop,nop,sackOK], length 0

But the verifier (in this case network-tools.com) is timing out and I don't see a response from tcpdump.

Code:

Validation results

error: Timed out

canonical address: <[email protected]>

MX records
preference 	exchange 	IP address (if included)
0 	www.cocoanet.us 	[74.1.46.163]
SMTP session

[Contacting www.cocoanet.us [74.1.46.163]...]
[Timed out]

 

Cool, I didn't change a thing and now the verification is working Dude, am I getting confused here.

Do NOT Upgrade to Ubuntu 9.10 -- Too many things have broken or are missing!!!!