On Fri, 10 Jul 2015, Franchisseur Robert wrote:

> since last security update of openssl I cannot send mail with sendmail
> on SL5

I confirm that we received the same error when we applied the 
OpenSSL update, and had to revert as well; remember to add an 
'exclude' rule in yum.conf to block it against future updates

We are in the process of leaving '5' for mailservers and 
webservers (to get the alter TLS versions), so are not 
actively seeking a fix

-- Russ herrold