I am running the same version of RedHat and sendmail, and had the same problem, but this solution did not work for me until I added 'sendmail : 127.0.0.1 : allow' to /etc/hosts.allow.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.