ping command won't mean anything sometimes. Some servers can have those
ping protocols blocked for security/performance reasons. After running a
quick netcat command to the port 143, I get data responded. Are you sure
you configured Thunderbird correctly?
https://www.xfinity.com/support/articles/setting-up-thunderbird
Not sure, but 993 seems like it time out. At that point it maybe a them
problem. -- Wouldn't hurt to call and ask.
On Fri, Dec 7, 2018 at 7:44 PM Jim <
jim.nantz15@comcast.net> wrote:
> Today I noticed a problem when I use Thunderbird to check my email on my
> Kubuntu 18.04 box. I got the following error in Thunderbird: Failed to
> connect to imap.comcast.net However it will connect to
> imap.comcast.net. I also couldn't ping imap.comcast.net.
>
> delboy@ladmo:~$ ping imap.comcast.net
> ping: imap.comcast.net: Name or service not known
> delboy@ladmo:~$
>
> In Network manager I have the following DNS servers in this order:
> 192.168.1.4 192.168.1.1, 8.8.8.8 8.8.4.4. I found this in /etc/resolv.conf
>
> # Generated by NetworkManager
> nameserver 127.0.0.53
>
> If I change 127.0.0.53 to one of the DNS servers I have in Network
> Manager, Thunderbird works again, but I'm not able to ping
> imap.comcast.net. I get the same error I mentioned earlier. I really
> don't care if I can ping it or not as long as Thunderbird can connect to
> it. However when I reboot or restart Network Manager, resolv.conf goes
> back to 127.0.0.3.
>
> Is there some bug with Network Manager or has comcast manged to screw up
> something?
>
> thanks
>
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