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-rw-r--r--src/man/sssd.conf.5.xml2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/man/sssd.conf.5.xml b/src/man/sssd.conf.5.xml
index 6a1292c6..04c69994 100644
--- a/src/man/sssd.conf.5.xml
+++ b/src/man/sssd.conf.5.xml
@@ -117,6 +117,8 @@
must be configured or SSSD won't start.
This parameter described the list of domains
in the order you want them to be queried.
+ A domain name should only consist of alphanumeric
+ ASCII characters, dashes and underscores.
</para>
</listitem>
</varlistentry>