Browse code

Andrei's note on reverse lookups with src/ip added

Jiri Kuthan authored on 27/06/2003 20:45:51
Showing 1 changed files
... ...
@@ -193,6 +193,14 @@ if (search("(f|From): .*@mydomain.com)) {
193 193
 				<emphasis>src_ip</emphasis>, which refers to IP address from 
194 194
 				which a request came.
195 195
 			    </para>
196
+				<warning>
197
+					<para>
198
+						Note that comparison of src_ip to an IP address may cause DNS
199
+						lookups and delay request processing. To avoid DNS lookups, don't
200
+						enclose IP addresses in quotes. Otherwise, reverse DNS lookup can be
201
+						performed to compare to host aliases.
202
+					</para>
203
+				</warning>
196 204
 			</listitem>
197 205
 			<listitem>
198 206
 			    <para>