I have No-IP smtp to send my outgoing mails and it was working fine with ZCS 7.2. After installing (fresh) 8.0 It doesn't seem to work.

Oct  6 13:50:27 imail postfix/smtpd[6300]: connect from imail.example.lk[]
Oct  6 13:50:27 imail postfix/smtpd[6300]: 5A6DB12A06F7: client=imail.example.lk[]
Oct  6 13:50:27 imail postfix/cleanup[6305]: 5A6DB12A06F7: message-id=<1977108072.0.1349511626284.JavaMail.root@vintageteas.lk>
Oct  6 13:50:27 imail opendkim[3231]: 5A6DB12A06F7: no signing table match for 'user@example.lk'
Oct  6 13:50:27 imail postfix/qmgr[3207]: 5A6DB12A06F7: from=<saman@example.lk>, size=710, nrcpt=1 (queue active)
Oct  6 13:50:27 imail postfix/smtpd[6300]: disconnect from imail.example.lk[]
Oct  6 13:50:31 imail postfix/smtp[6306]: 5A6DB12A06F7: to=<user@gmail.com>, relay=smtp-auth.no-ip.com[]:3325, delay=3.6, delays=0.1/0.01/3.2/0.29, dsn=5.7.1, status=bounced (host smtp-auth.no-ip.com[] said: 530 5.7.1 Authentication required (in reply to MAIL FROM command))
It says authentication required. But I've verified the configurations and it all ok. Please help me to fix it.