Internet Express for Tru64 UNIX Version 6.8 Administration Guide (14233)

If there were any errors in the configuration, the Administration utility displays a list of the
errors.
12. To block incoming mail for certain recipient user names, host names, or IP addresses, return
to the Configuring Relaying page (Section 5.1.4.6.1: Configuring Relaying) and set the Check
for Blacklist Recipients in Access Database checkbox.
5.1.4.6.3 Configuring Checking on Sender's Information
To configure checking on sender's information, follow these steps:
• Set the Accept Mail from Unqualified Senders checkbox when you want to accept messages
that do not include a domain name in the sender's address (that is, the sender's host name
is not fully qualified). If this checkbox is not set, the Sendmail server rejects any message
containing a sender address that is not fully qualified.
• Set the Accept Mail from Unresolvable Domains checkbox when you want to accept messages
that are from addresses that the Domain Name System (DNS) server cannot locate and
resolve. If this checkbox is not set, the Sendmail server rejects any message containing an
unresolvable domain name in the sender address.
5.1.4.7 Configuring LDAP
You can configure the Sendmail server to identify users based on the information in an LDAP
directory. When you complete the Configure LDAP form during Sendmail server configuration,
the Administration utility creates a K line entry in the sendmail.cf file that defines how the
Sendmail daemon is to search the LDAP directory to authenticate users.
For information on managing the LDAP Directory servers, see Chapter 11.
To configure the Sendmail server to use LDAP, follow these steps:
1. Under Mail on the Manage Components menu, choose Sendmail Server.
2. From the Sendmail Server Administration menu, choose Configure Sendmail Server.
3. On the Configure Sendmail Server menu, make sure that Server is selected and click on
Configure.
4. From the Configure the Sendmail Server menu, choose Configure LDAP.
5. On the Configure LDAP form, check the Enable LDAP Look-Up checkbox to enable the
Sendmail server to look up user information in an LDAP directory. (You can uncheck this
checkbox to disable LDAP directory lookups while retaining the LDAP configuration.)
6. In the LDAP Search Base field, specify the directory in your LDAP tree in which you want
to begin searching. Use a space to separate the entries in this field. For example:
ou=People o=XYZCompany c=US
This field corresponds to the -b option in the K line in sendmail.cf.
7. In the List of LDAP Servers field, enter the names of servers at your site that support LDAP.
Use a space to separate entries in this field. The LDAP libraries attempt to connect to these
servers in the order you list them. For example:
dirserver1.xyz.com dirserver2.xyz.com
This field corresponds to the -h option in the K line in sendmail.cf.
8. In the List of LDAP Search Strings field, specify one or more attributes that you want to
search on. (The maximum number of attributes that you can search is 1023.) Use a space to
separate attributes. (The base directory you specified in the LDAP Search Base field in step
6, combined with the strings supplied in this field, should define a search that returns at
most one entry.) For example:
uid cn
This field corresponds to the -k option in the K line in sendmail.cf.
9. In the List of LDAP Attributes Returned field, specify one or more attributes that will get
populated from the LDAP directory when your search is successful. You can specify at most
110 Mail Delivery Administration