diff -ur dovecot-1.0.rc10.orig/src/auth/passdb-checkpassword.c dovecot-1.0.rc10/src/auth/passdb-checkpassword.c
--- dovecot-1.0.rc10.orig/src/auth/passdb-checkpassword.c       2006-08-22 06:37:56.000000000 +0400
+++ dovecot-1.0.rc10/src/auth/passdb-checkpassword.c    2006-10-17 16:47:09.000000000 +0400
@@ -226,6 +226,10 @@
                        env_put(t_strconcat("REMOTE_IP=",
                                            net_ip2addr(&request->remote_ip),
                                            NULL));
+                       env_put(t_strconcat("TCPREMOTEIP=",
+                                           net_ip2addr(&request->remote_ip),
+                                           NULL));
+
                }
                if (request->master_user != NULL) {
                        env_put(t_strconcat("MASTER_USER=",