rpc.dracd - Dynamic Relay Authorization Control server
] [ -e expire
] [ dbfile
rpc.dracd is the Dynamic Relay Authorization Control server. It uses the
Berkeley db package to maintain a relay authorization map for sendmail, by
default /etc/drac/dracd.db. POP and IMAP mail servers make an RPC call to add
an entry to the authorization cache after they have authenticated each user.
The daemon, rpc.dracd, adds or updates entries in the cache, and periodically
expires old entries. Only trusted mail servers are permitted to communicate
with rpc.dracd, as controlled by /etc/drac/dracd.allow. If this file does not
exist, all local IP addresses are permitted.
The Allow File file consists of entries of the form:
where both netmask
must be dotted quads.
- Initialize the database on startup.
- -e expire
- Set the expire time limit. expire is the number of
minutes the entries will remain in the database. It defaults to 30
- Use a different database file name.
- default database file
- default allow file.
version is protected by the tcp_wrapper
You have to give the clients access to rpc.dracd
if they should be
allowed to use it. To allow connects from clients of the .bar.com domain you
could use the following line in /etc/hosts.allow:
You have to use the daemon name dracd
for the daemon name (even if the
binary has a different name).
For further information please have a look at the tcpd
(5) manual pages.
The following signals have the specified effect when sent to the server process
using the kill
- closes the database and terminates the server.