Apple Mac OS X Server Migration For Version 10.3 or Later Instrukcja Użytkownika Pobierz pdf (Strona 31)

Chapter 1 Mail Service Setup 31

Rejecting SMTP Connections From Specific Servers

Your mail service can reject unauthorized SMTP connections from hosts on a

disapproved-hosts list that you create. All mail traffic from servers in this list is denied

and the SMTP connections are closed after posting a 554 SMTP connection refused

error.

To reject unauthorized SMTP connections from specific servers:

1 In Server Admin, select Mail in the Computers & Services pane.

2 Click Settings.

3 Select the Filters tab.

4 Check “Refuse all messages from these.”

5 Edit the list of servers.

a Click the Add button to add a host to the list.

b Click the Remove button to delete the currently selected host from the list.

c Click the Edit button to change the currently selected host from the list.

d When adding to the list, you can use a variety of notations.

e Enter a single IP address.

Rejecting Mail From Blacklisted Senders

Your mail service can reject mail from SMTP servers that are blacklisted as open relays

by an ORBS server. Your mail service uses an ORBS server that you specify.

Important: Blocking unsolicited mail from blacklisted senders may not be completely

accurate. Sometimes it can prevent valid mail from being received.

To reject mail from blacklisted senders:

1 In Server Admin, select Mail in the Computers & Services pane.

2 Click Settings.

3 Select the Filters tab.

4 Check “Use these junk mail rejection servers.”

5 Edit the list of servers by adding the DNS name of an RBL server.

a Click the Add button to add a server to the list.

b Click the Remove button to delete the currently selected server from the list.

c Click the Edit button to change the currently selected server from the list.

d Enter the domain name of the desired RBL server, such as rbl.example.com

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Apple Mac OS X Server Migration For Version 10.3 or Later Instrukcja Użytkownika Strona 31