Just started seeing this on one server:
python: SELinux is preventing sendmail from read access on the file disable_ipv6.

It recommends a local policy. Now, searching, I see someone filed a bug for CentOS last year, 0012914, and they wound up creating a policy.

Cmts?

Note, btw, that the system has two IPv6 addresses – my manager has fallen for slack. Both valid.

mark