Bug#467152: exim4-daemon-heavy: TLS delivery attempts fail with: (gnutls_handshake): A TLS packet with unexpected length was received.

[Marc F. Clemente]

Marc Haber wrote:
> How did you switch to /dev/urandom? This should not be necessary any
> more on current versions of Debian, and - depending on the way the
> switch was done - decreases your security of your entire system.

ln -s /dev/urandom /dev/random

I knew it would decrease security of the entire system, but not sending 
email was going to be more of a problem.

> Greetings
> Marc, suggesting to revert the switch for testing purposes

As a matter of fact, I upgraded the hardware of the mail server last 
year.  When I did, I reinstalled the OS, and I initially forgot to 
switch to urandom.  It ran this way for a while and I noticed that I was 
not having problems.  I decided to leave it alone. So now I am using 
/dev/random, and it still works.  I even tried sucking up all the 
entropy (cat /dev/random > /dev/null) and sending email- it still works.

Marc