I have two computers. On the PC Thunderbird is connecting. On the Mac it isn't.
I have never had any issue with the Mac connecting before. I reinstalled Thunderbird and still it isn't connecting. Its just hanging, trying to connect.
"An error occurred during a connection to imap.riseup.net:993.
You have received an invalid certificate. Please contact the server administrator or email correspondent and give them the following information:
Your certificate contains the same serial number as another certificate issued by the certificate authority. Please get a new certificate containing a unique serial number.
(Error code: sec_error_reused_issuer_and_serial)"
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the security certificate from Riseup is not valid. Could it be one device is using SSL and the other is not?
Unfortunately due to a security vulnerability disclosed on the internet today ( http://heartbleed.com/ ) , we had to update our certificates. Check out our new certificate fingerprints ( https://help.riseup.net/en/security/network-security/certificates/riseup-signed-certificate-fingerprints.txt ) and learn how to verify them. ( https://help.riseup.net/en/security/network-security/certificates )
This may be related. Its very technical, and I am not a tech dunce. I simply don't know. I have Thunderbird, Firefox, on both machines. The Mac version of Thunderbird can't access the mail. It is online. I can get it on my PC version of Thunderbird too.
I need a unique serial number, it seems, for each machine. I have emailed RiseUp also.