Alert/Error message when recipient opens e-mail.

  • 1
  • Problem
  • Updated 11 months ago
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Every time one of our users gets an e-mail, they receive this error message:

________________________

Alert

An error occurred during a connection to t.e2ma.net:443.

Cannot communicate securely with peer: no common encryption algorithm(s).

(Error code: ssl_error_no_cypher_overlap)


The user is using an up to date Thunderbird e-mail client.

Any idea what this issue is?

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Amanda Gresens Rogers

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Posted 1 year ago

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Andrew Heuback, Official Rep

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Hey Amanda! We have not received similar reports from other users and it may be the result of a Thunderbird setting of some kind. If you can let me know which account and mailing this is in reference to, I can take a further look.

Thanks!
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Amanda Gresens Rogers

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Hi Andrew,

This is for the account for Mohonk Preserve under the e-mail: listmanager@mohonkpreserve.org.

The user says that they get this error message on every e-mail we send. He says,

"I get these error messages using Thunderbird email client (recent version). I DO NOT get them using webmail client (Round Cube)."

Thanks for your help!

Amanda
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Grey Stepp, Support Team Manager

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Hi Amanda, 

It does sound like this is likely an issue that is specific to Thunderbird.  I know that when similar messages pop up in other email clients, it can sometimes be a security setting.  

Because we are sending emails on behalf of your domain, it's generally considered best practice to WHITELIST and ADD EMMA AS AN AUTHORIZED SENDER to your email domain.  

Check out those links and maybe pass them on to your IT folks.  These are considered best practices for using any Email Service Provider, and they could help out with delivery in general as well as perhaps fixing this particular issue with Thunderbird.  

I'm quite curious to know if that helps, if you wouldn't mind letting us know!  

- Grey 
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Peter F Bird

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Same problem here: t.e2ma.net:443.

Cannot communicate securely with peer: no common encryption algorithm(s).
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Andrew Heuback, Official Rep

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Hey Peter. I can take a further look.

Please provide as many details as you can, including the account name, mailing name, and name of the program you used to view this mailing.

Thanks!
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James G. Elliott Co. Inc.

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I get the same messages using Postbox for email.
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Grey Stepp, Support Team Manager

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Hey there, 

Can you provide me with any additional details? 
Is this the Postbox desktop application or is it browser-based?  If browser-based, what browser is it? 
Is it the exact same message as the screenshot above? 
Does it happen with all Emma mailings or is there a specific one in your account that you can point me to that it happens on?  

Cheers!

-G
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James G. Elliott Co. Inc.

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It's the desktop application for Postbox -- and yes, same as that screenshot. 

For ANY emma mailing I just constantly get the errors, even if it's buried in an email thread with non-emma emails above it.  I can't even type a reply without that window popping up every few seconds. 
Photo of Grey Stepp

Grey Stepp, Support Team Manager

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Thanks so much for the extra information there!   I'm going to pass this along to our dev team to do some digging to see if we can identify where that error is originating.  
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Grey Stepp, Support Team Manager

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Hey there, 

I checked in with a couple of colleagues, and it does look like that error is due to a compatibility issue with the way our emails are formatted.  

Postbox is not on the list of inboxes that we expect to support our HTML.  We have that list here in our Resource Center:  https://support.e2ma.net/Resource_Center/Account_how-to/which-mail-programs-and-browsers-support-you...  

Postbox is one that perhaps needs to be specifically added to the "does not support our HTML" list.  

Please let me know if you have any questions about this!  

- G