After generating a new cert for SMTP-TLS from within nodeworx (my previous cert had expired) I receive the following error message from Thunderbird when trying to send a message:
An error occurred during a connection to private.domain.com:587.
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)
I receive this error even after deleting Thunderbird’s cert database (cert8.db for the specific profile), which apparently is the proper way to refresh Thunderbird’s cert database. The error also occurred even before doing this.
Any ideas what may be causing this issue?