> On Mar 3, 2016, at 2:12 AM, Eero Volotinen <eero.voloti...@iki.fi> wrote: > > Hi, > > Can some one give working migation intructions for postfix 2.3 > (postfix-2.3.3-7.el5) many of instructions are not working correctly on so > old version. (as settings are not supported)
Postfix 2.3 is too old for the required configuration changes: http://www.postfix.org/postconf.5.html#smtpd_tls_protocols smtpd_tls_protocols (default: !SSLv2, !SSLv3) List of TLS protocols that the Postfix SMTP server will exclude or include with opportunistic TLS encryption. ... This feature is available in Postfix 2.6 and later. Your only option is to apply an OpenSSL upgrade that disables SSLv2, and/or to upgrade to a newer Postfix release. -- Viktor.
