diff -wbBur dbmail-2.2.10/configure.in dbmail-2.2.10.pam/configure.in
--- dbmail-2.2.10/configure.in	2008-03-24 17:49:33.000000000 +0300
+++ dbmail-2.2.10.pam/configure.in	2008-09-18 16:43:04.000000000 +0400
@@ -78,6 +78,13 @@
 
 AC_SUBST(CRYPTLIB)
 
+dnl Check for PAM
+AC_SUBST(PAMLIBS,"")
+AC_CHECK_HEADERS(security/pam_appl.h,
+    [AC_CHECK_LIB(pam,pam_start,
+	[AC_DEFINE(HAVE_PAM,1,[Define if you have PAN including devel headers])
+	 PAMLIBS="-lpam"],,)])
+
 AC_SUBST(MYSQLLIB)
 AC_SUBST(MYSQLALIB)
 AC_SUBST(MYSQLLTLIB)
diff -wbBur dbmail-2.2.10/dbmail-user.c dbmail-2.2.10.pam/dbmail-user.c
--- dbmail-2.2.10/dbmail-user.c	2008-03-24 17:49:33.000000000 +0300
+++ dbmail-2.2.10.pam/dbmail-user.c	2008-09-18 16:43:04.000000000 +0400
@@ -157,7 +157,7 @@
 		"md5", 		"md5-raw",		"md5sum",	"md5sum-raw", 
 		"md5-hash",	"md5-hash-raw",		"md5-digest",	"md5-digest-raw",
 		"md5-base64",	"md5-base64-raw",	"md5base64",	"md5base64-raw",
-		"shadow", 	"", 	NULL
+		"shadow", 	"pam",	"", 	NULL
 	};
 
 	/* These must correspond to the easy text names. */
@@ -166,7 +166,7 @@
 		MD5_HASH, 	MD5_HASH_RAW,		MD5_DIGEST,	MD5_DIGEST_RAW,
 		MD5_HASH,	MD5_HASH_RAW,		MD5_DIGEST,	MD5_DIGEST_RAW,
 		MD5_BASE64,	MD5_BASE64_RAW,		MD5_BASE64,	MD5_BASE64_RAW,
-		SHADOW,		PLAINTEXT,	PWTYPE_NULL
+		SHADOW,		PWTYPE_PAM,		PLAINTEXT,	PWTYPE_NULL
 	};
 
 	memset(pw, 0, 50);
@@ -251,6 +251,12 @@
 				*enctype = "crypt";
 			}
 			break;
+#ifdef HAVE_PAM
+		case PWTYPE_PAM:
+			null_strncpy(pw, passwd, 49);
+			*enctype = "pam";
+			break;
+#endif			
 		default:
 			qerrorf("Error: password type not supported [%s].\n",
 				passwdtype);
diff -wbBur dbmail-2.2.10/dbmail-user.h dbmail-2.2.10.pam/dbmail-user.h
--- dbmail-2.2.10/dbmail-user.h	2008-03-24 17:49:33.000000000 +0300
+++ dbmail-2.2.10.pam/dbmail-user.h	2008-09-18 16:43:04.000000000 +0400
@@ -34,7 +34,7 @@
 typedef enum {
 	PLAINTEXT = 0, PLAINTEXT_RAW, CRYPT, CRYPT_RAW,
 	MD5_HASH, MD5_HASH_RAW, MD5_DIGEST, MD5_DIGEST_RAW,
-	MD5_BASE64, MD5_BASE64_RAW, SHADOW, PWTYPE_NULL
+	MD5_BASE64, MD5_BASE64_RAW, SHADOW, PWTYPE_PAM, PWTYPE_NULL
 } pwtype_t;
 
 int mkpassword(const char * const user, const char * const passwd,
diff -wbBur dbmail-2.2.10/modules/authsql.c dbmail-2.2.10.pam/modules/authsql.c
--- dbmail-2.2.10/modules/authsql.c	2008-03-24 17:49:33.000000000 +0300
+++ dbmail-2.2.10.pam/modules/authsql.c	2008-09-18 16:43:04.000000000 +0400
@@ -27,6 +27,19 @@
 #include "dbmail.h"
 #define THIS_MODULE "auth"
 
+#ifdef HAVE_PAM
+#include <security/pam_appl.h>
+
+#ifndef DEFAULT_DBMAIL_PAM_SERVICE
+#define DEFAULT_DBMAIL_PAM_SERVICE "dbmail"
+#endif
+
+#ifndef DEFAULT_DBMAIL_PAM_TTL
+#define DEFAULT_DBMAIL_PAM_TTL 60
+#endif
+
+#endif
+
 extern db_param_t _db_params;
 #define DBPFX _db_params.pfx
 
@@ -49,17 +62,80 @@
  */
 static int __auth_query(const char *thequery);
 
+#ifdef HAVE_PAM
+
+static char *pam_password = NULL;	/* Workaround for Solaris 2.6 brokenness */
+static pam_handle_t *pamh = NULL;
+static int pam_ttl = DEFAULT_DBMAIL_PAM_TTL;
+static char *pam_service = DEFAULT_DBMAIL_PAM_SERVICE;
+static time_t pamh_created = 0;
+/*
+ * A simple "conversation" function returning the supplied password.
+ * Has a bit to much error control, but this is my first PAM application
+ * so I'd rather check everything than make any mistakes. The function
+ * expects a single converstation message of type PAM_PROMPT_ECHO_OFF.
+ */
+static int
+password_conversation(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr)
+{
+    if (num_msg != 1 || msg[0]->msg_style != PAM_PROMPT_ECHO_OFF) {
+    	TRACE(TRACE_ERROR, "Unexpected PAM converstaion '%d/%s'", msg[0]->msg_style, msg[0]->msg);
+		return PAM_CONV_ERR;
+    }
+    if (!appdata_ptr) {
+	/* Workaround for Solaris 2.6 where the PAM library is broken
+	 * and does not pass appdata_ptr to the conversation routine
+	 */
+		appdata_ptr = pam_password;
+    }
+    if (!appdata_ptr) {
+		TRACE(TRACE_ERROR, "ERROR: No password available to password_converstation!");
+		return PAM_CONV_ERR;
+    }
+    *resp = calloc(num_msg, sizeof(struct pam_response));
+    if (!*resp) {
+		TRACE(TRACE_ERROR, "Out of memory!");
+		return PAM_CONV_ERR;
+    }
+    (*resp)[0].resp = strdup((char *) appdata_ptr);
+    (*resp)[0].resp_retcode = 0;
+
+    return ((*resp)[0].resp ? PAM_SUCCESS : PAM_CONV_ERR);
+}
+
+static struct pam_conv conv =
+{
+    &password_conversation,
+    NULL
+};
+
+#endif
+
+
 int auth_connect()
 {
 	/* this function is only called after a connection has been made
 	 * if, in the future this is not the case, db.h should export a 
 	 * function that enables checking for the database connection
 	 */
+#ifdef HAVE_PAM
+
+#endif
 	return 0;
 }
 
 int auth_disconnect()
 {
+#ifdef HAVE_PAM
+	int retval=PAM_SUCCESS;
+	if (pamh) {
+		retval = pam_end(pamh, retval);
+		if (retval != PAM_SUCCESS) {
+	    	pamh = NULL;
+	    TRACE(TRACE_ERROR, "failed to release PAM authenticator");
+		}
+    }
+#endif
 	return 0;
 }
 
@@ -458,7 +534,71 @@
 		is_validated = (strncmp(md5str, query_result, 32) == 0) ? 1 : 0;
 		g_free(md5str);
 	}
+#ifdef HAVE_PAM
+	else if (strcasecmp(query_result, "pam") == 0) {
+		int retval=0;
+		TRACE(TRACE_DEBUG, "validating using pam for user [%s] pass:[%s]",real_username,password);
+		conv.appdata_ptr = (char *) password;
+		pam_password= password;
+		if (pam_ttl == 0) {
+	    	/* Create PAM connection */
+	    	retval = pam_start(pam_service, real_username, &conv, &pamh);
+	    	if (retval != PAM_SUCCESS) {
+				TRACE(TRACE_ERROR, "failed to create PAM authenticator");
+				goto pam_error;
+	    	}
+		} else if (!pamh || (time(NULL) - pamh_created) >= pam_ttl || pamh_created > time(NULL)) {
+	    	/* Close previous PAM connection */
+	    	if (pamh) {
+				retval = pam_end(pamh, retval);
+				if (retval != PAM_SUCCESS) {
+		    		TRACE(TRACE_WARNING, "failed to release PAM authenticator");
+				}
+				pamh = NULL;
+	    	}
+	    	/* Initialize persistent PAM connection */
+	    	retval = pam_start(pam_service, "dbmail@", &conv, &pamh);
+	    	if (retval != PAM_SUCCESS) {
+				TRACE(TRACE_ERROR, "failed to create PAM authenticator");
+				goto pam_error;
+	    	}
+	    	pamh_created = time(NULL);
+		}
+		retval = PAM_SUCCESS;
+		if (pam_ttl != 0) {
+	    	if (retval == PAM_SUCCESS)
+				retval = pam_set_item(pamh, PAM_USER, real_username);
+	    	if (retval == PAM_SUCCESS)
+				retval = pam_set_item(pamh, PAM_CONV, &conv);
+		}
+		if (retval == PAM_SUCCESS)
+	    	retval = pam_authenticate(pamh, 0);
+		if (retval == PAM_SUCCESS ) //&& !no_acct_mgmt
+	    	retval = pam_acct_mgmt(pamh, 0);
+		if (retval == PAM_SUCCESS) {
+	    	is_validated=1;
+		} else {
+pam_error:
+		    is_validated=0;
+		}
+		/* cleanup */
+		retval = PAM_SUCCESS;
+#ifdef PAM_AUTHTOK
+		if (pam_ttl != 0) {
+	    	if (retval == PAM_SUCCESS)
+				retval = pam_set_item(pamh, PAM_AUTHTOK, NULL);
+		}
+#endif
+		if (pam_ttl == 0 || retval != PAM_SUCCESS) {
+	    	retval = pam_end(pamh, retval);
+	    	if (retval != PAM_SUCCESS) {
+				TRACE(TRACE_WARNING, "failed to release PAM authenticator\n");
+	    	}
+	    	pamh = NULL;
+		}
 
+	}
+#endif
 	if (is_validated) {
 		db_user_log_login(*user_idnr);
 	} else {
diff -wbBur dbmail-2.2.10/modules/Makefile.am dbmail-2.2.10.pam/modules/Makefile.am
--- dbmail-2.2.10/modules/Makefile.am	2008-03-24 17:49:33.000000000 +0300
+++ dbmail-2.2.10.pam/modules/Makefile.am	2008-09-18 16:44:53.000000000 +0400
@@ -60,7 +60,7 @@
 
 # This one is always built.
 libauth_sql_la_SOURCES = authsql.c
-libauth_sql_la_LIBADD = @CRYPTLIB@
+libauth_sql_la_LIBADD = @CRYPTLIB@ @PAMLIBS@
 
 if LDAP
 libauth_ldap_la_SOURCES = authldap.c