postfix help

[Michael Sherman]

Hello all.

I am trying to get postfix to relay mail through my ISP, without much
luck though.

I installed postfix with sasl compiled in:
ldd /usr/local/libexec/postfix/smtpd
	libsasl.so.8 => /usr/local/lib/libsasl.so.8 (0x280be000)
	libpam.so.3 => /usr/lib/libpam.so.3 (0x280cb000)
	libcrypt.so.3 => /lib/libcrypt.so.3 (0x280d2000)
	libsasl2.so.2 => /usr/local/lib/libsasl2.so.2 (0x280eb000)
	libssl.so.4 => /usr/lib/libssl.so.4 (0x280ff000)
	libcrypto.so.4 => /lib/libcrypto.so.4 (0x28132000)
	libpcre.so.0 => /usr/local/lib/libpcre.so.0 (0x28243000)
	libc.so.6 => /lib/libc.so.6 (0x2826b000)
	libldap-2.2.so.7 => /usr/local/lib/libldap-2.2.so.7 (0x28354000)
	liblber-2.2.so.7 => /usr/local/lib/liblber-2.2.so.7 (0x2837e000)

sasld is running, was started before postfix was.
ps aux | grep sasl
root    14646  0.0  0.4  1444   712  ??  Is    4:54PM   0:00.00
/usr/local/sbin/saslauthd1 -a pam

here is an excerpt of my main.cf

relayhost = smtp.broadband.rogers.com
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/usr/local/etc/postfix/sasl_passwd


Yet when I try to send any mail it gets bounced back by Rogers (which
uses Yahoo for mail services) :

tail /var/log/maillog

Dec  7 17:46:09 mike postfix/cleanup[14941]: 70BED50856:
message-id=<200512072246.jB7Mk981014938 at FreeBSD>
Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: 70BED50856:
from=<michael at mike.dyndns.org>, size=565, nrcpt=1 (queue active)
Dec  7 17:46:09 m sendmail[14938]: jB7Mk981014938:
to=msherman at gmail.com, ctladdr=michael (1001/1001), delay=00:00:00,
xdelay=00:00:00, mailer=relay, pri=30057, relay=[127.0.0.1]
[127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as 70BED50856)
Dec  7 17:46:09 FreeBSD postfix/smtpd[14939]: disconnect from
localhost[127.0.0.1]
Dec  7 17:46:09 FreeBSD postfix/smtp[14942]: 70BED50856:
to=<msherman at gmail.com>,
relay=smtp-rog.mail.yahoo2.akadns.net[206.190.36.18], delay=0,
status=bounced (host smtp-rog.mail.yahoo2.akadns.net[206.190.36.18]
said: 530 authentication required - for help go to
http://help.yahoo.com/help/us/mail/pop/pop-11.html (in reply to MAIL
FROM command))
Dec  7 17:46:09 FreeBSD postfix/cleanup[14941]: C244750865:
message-id=<20051207224609.C244750865 at mike.dyndns.org>
Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: C244750865: from=<>,
size=2600, nrcpt=1 (queue active)
Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: 70BED50856: removed
Dec  7 17:46:09 FreeBSD postfix/smtp[14942]: C244750865:
to=<michael at FreeBSD.dyndns.org>,
relay=smtp-rog.mail.yahoo2.akadns.net[206.190.36.18], delay=0,
status=bounced (host smtp-rog.mail.yahoo2.akadns.net[206.190.36.18]
said: 530 authentication required - for help go to
http://help.yahoo.com/help/us/mail/pop/pop-11.html (in reply to MAIL
FROM command))
Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: C244750865: removed

Any ideas?
Thanks in advance