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Error message only when receiving an email directly from Plusnet

audio21
Hooked
Posts: 6
Registered: ‎15-09-2017

Error message only when receiving an email directly from Plusnet

Using POSTBOX as my email client whenever I get an email directly from Plusnet I get this error message.  

'An error occurred during a connection to comm.plus.net:443.

Cannot communicate securely with peer: no common encryption

algorithm(s).

(Error code: ssl_error_nocypher_overlap)'

 

 

I never see this message from any other email sender.  Anyone any ideas?  Thanks.

12 REPLIES
Superuser
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Registered: ‎30-07-2007

Re: Error message only when receiving an email directly from Plusnet

Plusnet don't support SSL for collecting mail. You need to disable encryption on the PlsuNet settings in your email client, this might help https://www.plus.net/help/email-guides/how-to-set-up-plusnet-email/

audio21
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Registered: ‎15-09-2017

Re: Error message only when receiving an email directly from Plusnet

Thanks for your quick reply, but unfortunately SSL it is already disabled...
Superuser
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Re: Error message only when receiving an email directly from Plusnet

Ah! is that really

comm.plus.net:443

actually that looks like it's the outgoing SMTP settings. They're also trying to use ssl ( port 443 ).

They need to be relay.plus.net and port 587 , with ssl disabled.

Hope that helps

audio21
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Registered: ‎15-09-2017

Re: Error message only when receiving an email directly from Plusnet

Thanks again, but those are already my outgoing mail settings.  

audio21
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Posts: 6
Registered: ‎15-09-2017

Re: Error message only when receiving an email directly from Plusnet

Apart from Plusnet this Postbox client also has a Hotmail account.  This account has to have SSL enabled to work.  Although I can't see why that should effect incoming Plusnet emails to the Plusnet account I've just deleted the Hotmail account just to see if that is causing the error message.
Superuser
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Re: Error message only when receiving an email directly from Plusnet

Thanks again, but those are already my outgoing mail settings.

then where is the

'An error occurred during a connection to comm.plus.net:443.

 coming from ?.

Something seems to think it's connecting to comm.plus.net:443. The comm.plus.net sounds like an automatic mail account setup trying to guess an outgoing server name from the incoming account details

Superuser
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Re: Error message only when receiving an email directly from Plusnet

Port 443 is used for HTTPS connections to a web server, not email. The incoming mail server for Plusnet should be imap.plus.net port 143 with SSL.TLS off.

David
audio21
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Posts: 6
Registered: ‎15-09-2017

Re: Error message only when receiving an email directly from Plusnet

Thanks David.  In fact my incoming mail is POP not IMAP for various reasons.  I still find it strange that only emails coming directly from Plusnet themselves produces this error message.  

jab1
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Re: Error message only when receiving an email directly from Plusnet

I too have problems with PN marketing email through my Thunderbird POP connection - click to open them and I get a security-type warning (can't remember exactly what it is), but it totally locks up Thunderbird - I have to kill it via task-manager.

Reading the mail in web-mail is perfectly OK, so I'm guessing it is something at the BT end, as these marketing mails come through a BT, not PN, system.

I'll try and get a screenshot next time it happens.

John
Superuser
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Re: Error message only when receiving an email directly from Plusnet


@audio21 wrote:

In fact my incoming mail is POP not IMAP for various reasons. 


In that case the incoming email server should be mail.plus.net on port 110. SSL/TLS should be off.

David
audio21
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Registered: ‎15-09-2017

Re: Error message only when receiving an email directly from Plusnet

Which indeed it is.

Superuser
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Re: Error message only when receiving an email directly from Plusnet

Sorry, my impression was that the error occurred during transmission rather than with the content of the message after receipt.

It is a bit odd including an HTTPS tracking pixel in an HTTP page.

David