Summary
The remote host is missing an update to proftpd-dfsg announced via advisory DSA 2346-2.
Solution
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202346-2
Insight
The ProFTPD security update, DSA-2346-1, introduced a regression, preventing successful TLS connections. This regression does not affected the stable distribution (squeeze), nor the testing and unstable distributions.
For the oldstable distribution (lenny), this problem has been fixed in version 1.3.1-17lenny9.
We recommend that you upgrade your proftpd-dfsg packages.
