README.md in truemail-2.3.3 vs README.md in truemail-2.3.4

- old
+ new

@@ -201,12 +201,12 @@ # return false. Other validations will not processed even if it was defined in validation_type_for # It is equal to empty array by default. config.blacklisted_domains = ['somedomain1.com', 'somedomain2.com'] # Optional parameter. This option will provide to use custom DNS gateway when Truemail - # interacts with DNS. If you won't specify nameserver's ports Truemail will use default - # DNS TCP/UDP port 53. By default Truemail uses DNS gateway from system settings - # and this option is equal to empty array. + # interacts with DNS. Valid port numbers are in the range 1-65535. If you won't specify + # nameserver's ports Truemail will use default DNS TCP/UDP port 53. By default Truemail + # uses DNS gateway from system settings and this option is equal to empty array. config.dns = ['10.0.0.1', '10.0.0.2:54'] # Optional parameter. This option will provide to use not RFC MX lookup flow. # It means that MX and Null MX records will be cheked on the DNS validation layer only. # By default this option is disabled.