Код:

define(`confAUTH_OPTIONS', `A')dnl	
dnl #	
dnl # The following allows relaying if the user authenticates, and disallows	
dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links	
dnl #	
define(`confAUTH_OPTIONS', `A p')dnl	
dnl # 	
dnl # PLAIN is the preferred plaintext authentication method and used by	
dnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs do	
dnl # use LOGIN. Other mechanisms should be used if the connection is not	
dnl # guaranteed secure.	
dnl # Please remember that saslauthd needs to be running for AUTH. 	
dnl #	
dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl	
dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl