Re: Unable to enforce the usage of the stronger tls ssl ciphers by Postfix

2011-05-23 Thread Wietse Venema
Mark Alan: > This issue is not present without postscreen. Could it be related to it or >- with the tlsproxy service? Perhaps surprisingly, both smtpd and tlsproxy specify the same parameters to OPENSSL (*). If you tweek them, then you may see differences. Wietse (*) I can't imagine why

Re: Unable to enforce the usage of the stronger tls ssl ciphers by Postfix

2011-05-23 Thread Wietse Venema
Mark Alan: > In any case setting 'smtpd_tls_mandatory_exclude_ciphers = AES128, DES, > MD5, aNULL' should not interfere with postfix ability to choose from > the strongest to the weakest of the remaining ciphers (as shown by > openssl ciphers -v 'ALL:@STRENGTH') > > Is it a postfix bug? If so, I

Re: Unable to enforce the usage of the stronger tls ssl ciphers by Postfix

2011-05-23 Thread Mark Alan
On Sun, 22 May 2011 22:00:49 -0500, Noel Jones wrote: > Is postfix also the client? What are the settings on that > machine? Client machines use Claws Mail as MUA (configured to use SMTP at 587) and those machine have Postfix as the MTA, configured like this: $ sudo postconf -n | grep -v '^smt

Re: Unable to enforce the usage of the stronger tls ssl ciphers by Postfix

2011-05-22 Thread Noel Jones
On 5/22/2011 4:27 AM, Mark Alan wrote: Hello list, While using ubuntu 10.10, postfix 2.8.1, dovecot 2.0.12, openssl 0.9.8o, and trying to connect to the mail server via postfix 'submission' the best cipher that I am able to get is DHE-RSA-AES128-SHA (128/128 bits) As it is only the 11th entry

Unable to enforce the usage of the stronger tls ssl ciphers by Postfix

2011-05-22 Thread Mark Alan
Hello list, While using ubuntu 10.10, postfix 2.8.1, dovecot 2.0.12, openssl 0.9.8o, and trying to connect to the mail server via postfix 'submission' the best cipher that I am able to get is DHE-RSA-AES128-SHA (128/128 bits) As it is only the 11th entry in the list showed by openssl ciphers -v