Thunder bird error: weak ephemeral Diffie-Hellman key error

Posted at December 28, 2015 at 1:33 pm by John Quaglieri

Covers cpanel + courier-imap If thunderbird gives weak ephemeral Diffie-Hellman key error a new Diffie-Hellman key is needed. The default size may be under 1024bits and should be 2048bits now. First check the key size (default 768 usually) openssl dhparam -text -noout -in /usr/lib/courier-imap/share/dhparams.pem Diffie-Hellman-Parameters: (768 bit) prime: 00:bb:55:fc:77:55:fe:30:a6:c8:fa:d8:c4:86:28: ed:ba:a0:f1:d9:b3:52:5e:ce:6a:9f:1f:22:b0:81: 30:7e:a0:99:85:59:b5:9f:23:3b:94:f   [...]

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