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charlies
Posts: 27
Registered: ‎09-04-2013
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BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server

I am seeing this more and more frequently: email client is TB 17.0.5; has worked reliably for about a year on this PC (Ubuntu 11.10), no changes to my config or passwords or internet / BB gateway etc; so it looks like an issue related to the BT move away from Yahoo.

 

SO.. I had a look at what is happening with Wireshark.

 

TB sends a DNS request for the IP address of mail.btinternet.com

 

Response has TWO IP addresses:


- primary name is always mail.btinternet.bt.lon5.cpcloud.co.uk; IP addresses are 46.228.39.153 & 65.20.0.43

 

Subsequently, when the first IP address (46....) is used, server replies +OK hello from popgate-0.8.0.357900 pop110.bt.mail.ir2.yahoo.com and shows STLS on the capability list, so TB goes ahead to retrieve any mail..

 

SOMETIMES, the 2nd IP address (65....) is used, & server replies +OK POP3 PROXY server ready.

Next, the CAPA list returned by the server does NOT include STLS, so session is terminated..

 

 

Can anyone comment on:

 

1. why TB alternates between the IP addresses given in the DNS response ? & can this be 'contolled

2. what is the significance of 'POP3 PROXY server' ??

3. why is STLS not on the capabilities list ?

 

thanks in advance...

 

Contributor
charlies
Posts: 27
Registered: ‎09-04-2013
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Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server

FTR, link to question in Mozilla forum: here

 

It would be great if someone can give a clue as to when BT / Yahoo updated the DNS entry to point to the 2 servers, to try and correlate with when problem was noticed here..

 

Update re what my TB client is doing; picked up mail without issues first thing today, but now it is constantly failing, AND the DNS response only contains the single IP address 65.x.x.x that does not support TLS...

 

Time to make an official 'problem report' to BT and await their speedy informed response...

Beginner
Wiganken
Posts: 3
Registered: ‎18-08-2011
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Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server

I have also been having this same problem for a week now. I also have Thunderbird 17.0.7 and the server settings are correct and have not been changed. I think you are right and it is associated with BT moving away from Yahoo. BT have been no help in fixing this so whilst I can't help you I can join the call to make a problem report. The message that comes up on my PC is as shown on attached picture so is yours the same?

 

Regards,

 

KenTSL Failure Alert.JPG

Aspiring Expert
spacepilot
Posts: 164
Registered: ‎29-08-2010
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Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server

[ Edited ]

Today (after 9am, before was fine ) I am also having a problem accessing my emails using windows live mail

 

Unable to send or receive messages for the (xxxx.xxxxxxxxxx account. The connection to the server has failed.

Server: 'mail.btinternet.com' Windows Live Mail Error ID: 0x800CCC0E Protocol: POP3 Port: 110 Secure(SSL): No Socket Error: 10013

 

I can access it through https://login.yahoo.com/config/login_verify2 though!

 

 

 

 

 

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Aspiring Contributor
grandpa
Posts: 6
Registered: ‎18-07-2013

Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server

I am having exactly the same problems with Thunderbird.  I have complained to BT and received a ridiculous answer from someone abroad.  To fix it I have changed - Account Settings - Server Settings - Connection security  from STARTTLS to SSL/TLS.  I don't know what the effect of this is, but I can send and receive emails.  What a pity the support is so poor.

Contributor
charlies
Posts: 27
Registered: ‎09-04-2013
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BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server Windows no socket error: 10013

@Wiganken: my error message looks the same.

 

@spacepilot; your success is via the webmail interface, which works for me too; basically because it uses a completely different 'mechanism' compared to a mail client like Thunderbird or Windows Live Mail.

 

I spent over an hour with BT support today; after getting through the 1st layers (who basically did not understand the problem), ended up with the supposed BT Yahoo specialists who acknowledged that there may be 'transitory' problems as BT move away from Yahoo,

     But then they said if the problem is still there after 24 hours to contact Thunderbird support....

 

IF you can stand the pain afford the time (or anyone else reading this) to contact BT support yourself, especially with a Windows platform (they do not understand Linux and cannot connect their GoToAssist remote help engine to Linux machines) that may help them recognize that they have a problem; one of the more helpful support guys I talked to said they had not (yet) seen many other reports of this type of problem.

 

TEMPORARY WORKAROUND that MAY help you: edit your mail client settings for the incoming server, replace the mail.btinternet.com string with the 46.x.y.z IP address mentioned above.

Expert
IanC
Posts: 1,655
Registered: ‎20-02-2010
0

Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server Windows no socket error: 100

I really don't have time to mass around with this, but the other day I also noticed the 2 IP addresses, but as you say, this appears to have changed now - and all of my connections to mail.btinternet.com are going to mail.btinternet.bt.lon5.cpcloud.co.uk.

 

Although it (mail.btinternet.bt.lon5.cpcloud.co.uk) is not announcing STLS in its CAPA response, I'm still able to make SSL connections to it - STLS does fail though. (I do know that T'bird used to be confused about what it meant by, and the difference between, SSL & STLS - no idea if that's changed nowadays...)

 

@spacepiot - as your failures are non-SSL, on port 110, I think it's safe to say that your problem is something different.

Contributor
charlies
Posts: 27
Registered: ‎09-04-2013
0

BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server Windows no socket error: 10013

@grandpa; this works for my TB client also. Thanks.

 

The change basically causes the client to request a different protocol from the mail server, and use a different port; and it seems this is supported by the 'new' server.

 

I agree with your sentiment that BT support 'could be better'; but some of the responsibility here lies with BT 'management' (those responsible for 'managing' the transition from Yahoo to whatever is next) for not communicating with both support and customers about the needed change.

 

I wonder how many customers are going to need to change their mail settings, and how many will need help.....

 

What is more interesting is that the 'new' protocol is (IMHO) 'more secure' than the old one; whilst the more knowledgable support guy was telling me earlier today that BT basically do not support/provide secure email for the consumer accounts...

 

I just  checked again; whilst received mail looks 'pretty secure', outgoing mail (to SMTP port 25) is still 'in the clear'.

Expert
IanC
Posts: 1,655
Registered: ‎20-02-2010
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Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server Windows no socket error: 100

charlies wrote:
What is more interesting is that the 'new' protocol is (IMHO) 'more secure' than the old one;
I'd go along with that.

I just  checked again; whilst received mail looks 'pretty secure', outgoing mail (to SMTP port 25) is still 'in the clear'.

 

Try SSL on port 465

Beginner
dougcoull
Posts: 5
Registered: ‎18-07-2013
0

Re: BT Yahoo mail: Unable to establish (S)TLS connection to POP3 server

Having the same problems but in honesty I wouldn't even bother phoning to report.

 

Pleased to say that following grandpa's advice the problem is resolved for now.