TB Initial Connections

[3guesses]

Hi,

I recently started using Thunderbird as my email client and I was wondering if I could ask a few questions about the connections it initially makes when it starts up.

First up, I have noticed that when I start Thunderbird it downloads ~14MB of data from somewhere, and uploads ~500KB of data. This is before I have logged into my email servers, so it can't be checking my emails. Can anyone tell me what data transfer is actually occurring?

Secondly, according to the network stats, connections to the following servers are made - I have run nslookup for each to identify the server name:

Code: Select all

root# nslookup 91.189.91.38
38.91.189.91.in-addr.arpa	name = banjo.canonical.com

root# nslookup 185.125.190.39
39.190.125.185.in-addr.arpa	name = aerodent.canonical.com

root# nslookup 172.67.74.82
** server can't find 82.74.67.172.in-addr.arpa: NXDOMAIN

root# nslookup 185.125.190.36
36.190.125.185.in-addr.arpa	name = actiontoad.canonical.com

root# nslookup 185.125.190.39
39.190.125.185.in-addr.arpa	name = aerodent.canonical.com

root# nslookup 91.189.91.38
38.91.189.91.in-addr.arpa	name = banjo.canonical.com

root# nslookup 91.189.91.39
39.91.189.91.in-addr.arpa	name = kazooie.canonical.com

root# nslookup 96.17.179.193
193.179.17.96.in-addr.arpa	name = a96-17-179-193.deploy.static.akamaitechnologies.com

root# nslookup 104.26.2.27
** server can't find 27.2.26.104.in-addr.arpa: NXDOMAIN

Do all of these look kosher?

In particular, should I be worried about the 2 unknown server addresses (172.67.74.82, 104.26.2.27)?

Thanks very much,

3g

[gdot179]

Obviously you are not a student of about:config in FF or it's equivalent in TB, Config Editor.

Take a look and all will be revealed as you peruse the dozens upon dozens of links that have nothing to do with the email servers.

I have removed one and all from FF and here I am, working perfectly as a browser.

Do not try that with TB untill you are extremely familiar with the process as you might just remove an actual link required for your email to function correctly.

[gdot179]

Curiosity got the better of me so here are the numbers.

I brought up a new TB 91.8.1 profile but did not configure it in any way.

There are 72 links!

They are all self-explanatory so no need to wonder what they are for.