I am using 0.99.10.7-1 on Debian, and I'm having some trouble with SSL. I purchased a certificate from Thawte and I can't figure out how to tell dovecot about the CA cert. Adding ssl_ca_file to my configuration produces "Unknown setting: ssl_ca_file" on dovecot startup.

Postfix has a smtpd_tls_CAfile argument and that part is working fine.

Is this a Debian-specific problem or is ssl_ca_file newer than 0.99.10.7? I guess ssl_ca_file is newer than 0.99. I have the same settings (debian -sarge) and i am using ssl_cert_file and ssl_key_file to get the certificate working. I checked ssl_ca_file and i got the same error, nevertheless it's in the recent dovecot.conf file from 1.x.testing, therefore it should be newer than 0.99.