+define(`confPRIVACY_FLAGS',`authwarnings,novrfy,noexpn,noetrn')
+TRUST_AUTH_MECH(`LOGIN PLAIN GSSAPI KERBEROS_V4 DIGEST-MD5 CRAM-MD5')
+define(`confAUTH_MECHANISMS',`LOGIN PLAIN GSSAPI KERBEROS_V4 DIGEST-MD5 CRAM-MD5')
+dnl Define maximum message size here if you want:
+dnl define(`confMAX_MESSAGE_SIZE', `10000000')