SMTP not working

[pstanbra]

Hi -
I am unable to send out mail ...
Anyone have any ideas - see log below


May 31 12:13:08 websrv1 postfix/smtpd[15807]: connect from myip.bethere.co.uk[myip1]
May 31 12:13:08 websrv1 postfix/smtpd[15807]: warning: myip.bethere.co.uk[myip]: SASL NTLM authentication aborted
May 31 12:13:08 websrv1 postfix/smtpd[15807]: warning: SASL authentication failure: required parameters missing
May 31 12:13:08 websrv1 postfix/master[3679]: warning: process /usr/lib/postfix/smtpd pid 15807 killed by signal 11
May 31 12:13:08 websrv1 postfix/smtpd[15815]: connect from myip.bethere.co.uk[myip]

May 31 12:13:08 websrv1 postfix/smtpd[15815]: warning: myip.bethere.co.uk[myip]: SASL NTLM authentication aborted
May 31 12:13:08 websrv1 postfix/smtpd[15815]: warning: SASL authentication failure: required parameters missing

May 31 12:13:08 websrv1 postfix/master[3679]: warning: process /usr/lib/postfix/smtpd pid 15815 killed by signal 11

May 31 12:13:08 websrv1 postfix/master[3679]: warning: /usr/lib/postfix/smtpd: bad command startup -- throttling
May 31 12:13:39 websrv1 imapd: Connection, ip=[::ffff:myip]
May 31 12:13:39 websrv1 imapd: LOGIN, user=me@mydomain, ip=[::ffff:myip], port=[64630], protocol=IMAP
May 31 12:13:39 websrv1 imapd: DISCONNECTED, user=me@mydomain, ip=[::ffff:myip1], headers=0, body=0, rcvd=11, sent=41, time=0