SYNOPSIS

CheckSenderHost = [true | false]

DESCRIPTION
The CheckSenderHost slow.conf configuration item allows the host part of the SMTP MAIL FROM: address to be check for valitity.

If this CheckSenderHost slow.conf configuration item is declared as true, the Milter will check the host part of the SMTP MAIL FROM: address and will mark it as bad if it is missing or cannot be looked up with gethostbyname. Bad status is marked by setting the bho event (as described in the standard event set).

If this CheckSenderHost slow.conf configuration item is false (the default is false), the above check is skipped. In the event you have a slow network, or slow DNS lookups, you may wish to define this CheckSenderHost as false, because gethostbyname may cause your Milter to time out and thus to become inefective.

If your operating system lack the getipnodebyname(3) routine, the following warning will print if you try to enalbe this item, and this item will be ignored:

CheckSenderHost requires getipnodebyname(). Upgrade your OS.