CentOS 7.2 /etc/postfix/helo_access error
OS Centos 7.2 ISPConfig-3.1
May 9 18:33:17 localhost postfix/smtpd[31170]: warning: regexp map /etc/postfix/helo_access, line 19: Invalid preceding regular expression
/etc/postfix/helo_access helo_access
OS Centos 7.2 ISPConfig-3.1
May 9 18:33:17 localhost postfix/smtpd[31170]: warning: regexp map /etc/postfix/helo_access, line 19: Invalid preceding regular expression
/etc/postfix/helo_access helo_access