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About ViperGeek
since
06-11-2012
10-26-2018
ViperGeek
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06-12-2012
09:15 PM
Hi Martin. Globally, Windows 7 will prefer to resolve a DNS name via IPv6, then try IPv4. On my Windows 7 PC, mail.comcast.net translates to 2001:558:fe14:70::33 (IPv6). With IPv6 disabled, mail.comcast.net translates to 76.96.58.11. I use Thunderbird for e-mail, so it's not an Outlook-specific problem. It would seem that, at the moment, Comcast's IPv6 mail server(s) aren't quite ready to let us check e-mail. - Dave
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06-12-2012
09:04 PM
Hi John. Here's what mail.comcast.net resolves to in IPv6: C:\Users\x>ping mail.comcast.net Pinging mail.comcast.net [2001:558:fe14:70::33] with 32 bytes of data: Request timed out. Request timed out. Destination net unreachable. Request timed out. and my IPv6 address: C:\Users\x>ipconfig Wireless LAN adapter Linksys Wireless Network: Connection-specific DNS Suffix . : hsd1.nh.comcast.net. IPv6 Address. . . . . . . . . . . : 2001:470:1f07:1609:6536:b69c:1aa0:e0e IPv6 Address. . . . . . . . . . . : fd57:78a3:1a9:0:6536:b69c:1aa0:e0e Temporary IPv6 Address. . . . . . : 2001:470:1f07:1609:3077:a40e:6965:91cd Temporary IPv6 Address. . . . . . : fd57:78a3:1a9:0:3077:a40e:6965:91cd Link-local IPv6 Address . . . . . : fe80::6536:b69c:1aa0:e0e%29 IPv4 Address. . . . . . . . . . . : 192.168.0.26 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : fe80::5a6d:8fff:fe80:6c8b%29 192.168.0.1 I'm using Hurricane Electric as my IPv6 tunnel broker. My SMTP/POP settings are: SMTP: smtp.comcast.net:587 with STARTTLS security (SSL/TLS to :465 fails as well) POP: mail.comcast.net:110 with STARTTLS security (SSL/TLS to :995 fails as well) - Dave
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06-11-2012
03:38 PM
Kudos for finding IPv6 to be the root of all evil (with respect to e-mail problems). I discovered the same thing and posted my epiphany to a different topic: http://forums.comcast.com/t5/E-Mail-and-Xfinity-Connect-Help/Comcast-net-e-mail-issues-with-username-and-password-errors/m-p/1310681#M206300 - Dave
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06-11-2012
03:30 PM
I'm not sure if this is the "resolved" problem Comcast is speaking of, but my wife just brought me her netbook complaining that she hasn't been able to check Comcast e-mail since June 2, 2012. I just went into tech support mode and tried just about everything, including changing her password to something more complex (it didn't help). Finally, I used old-fashioned 'ping' to check whether mail.comcast.net was reachable. It was, but the fun part is, it returned an IPv6 address. Realizing that Comcast doesn't natively support IPv6, but many many places do, I thought that perhaps they were trying to roll out new IPv6 service and so disabled IPv6 on my wife's netbook. Sure enough, 100+ e-mails immediately started downloading. So, it's a shot in the dark, but if your PC is somehow picking up an IPv6 address -- ironically, the preferred protocol in Windows 7 -- you may be reaching out to a Comcast service that isn't quite ready for prime time. If so, try disabling (unchecking) IPv6 within Control Panel -> Network and Sharing Center -> Change adapter settings -> right-click Local Area Connection or Wireless Network Connection and select Properties, then uncheck Internet Protocol Version 6 (TCP/IPv6). - Dave ps. This seems to be a recurring theme: http://forums.comcast.com/t5/E-Mail-and-Xfinity-Connect-Help/Outlook-2003-Receiving-Mail-Problem-fixed/td-p/1305763
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