telnet 127.0.0.1 25
maillog :
Jan 14 14:25:20 maillab postfix/smtpd[1265]: warning: SASL authentication failure: OTP: No database support
Jan 14 14:25:20 maillab postfix/smtpd[1265]: connect from localhost.localdomain[127.0.0.1]

ehlo maillab.domain
250-maillab.isratek
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-STARTTLS
250-AUTH PLAIN DIGEST-MD5 CRAM-MD5
250-AUTH=PLAIN DIGEST-MD5 CRAM-MD5
250-XVERP
250 8BITMIME

строчка  AUTH повторяется 2 раза ...