Email message disappears - help!

I have one(technically two) recipient that does not seem to get mail from a particular sender - it vanishes. The logs SEEM to show it arriving, can anyone shed some light on this from this log? Or suggest where else to look?

This shows two messages to two addresses (Same owner), and the sender email never arrives in their inbox.(apparently)

Sender is barry@senderdomain.ca - changed, of course, recipient is office.recipientdomain, and al.recipientdomain

Thanks Oct 26 11:37:34 mydomain postgrey[26193]: action=pass, reason=triplet found, client_name=exprod7mx175.postini.com, client_address=69.18.2.153, sender=barry@senderdomain.ca, recipient=office@recipientdomain.ca Oct 26 11:37:34 mydomain postfix/smtpd[13120]: EE129CDCD52: client=exprod7mx175.postini.com[69.18.2.153] Oct 26 11:37:35 mydomain postfix/smtpd[13108]: disconnect from exprod7mx197.postini.com[64.18.2.89] Oct 26 11:37:38 mydomain postfix/cleanup[13118]: EE129CDCD52: message-id=4CE924B89F57B74EA5A7EC2A4844B5FC133E0E@lawdc.LEGAL.local Oct 26 11:37:39 mydomain postfix/qmgr[26296]: EE129CDCD52: from=barry@senderdomain.ca, size=233207, nrcpt=1 (queue active) Oct 26 11:37:40 mydomain postfix/smtpd[13120]: disconnect from exprod7mx175.postini.com[69.18.2.153] Oct 26 11:37:40 mydomain spamd[2272]: spamd: connection from mydomain.com [127.0.0.1] at port 35040 Oct 26 11:37:40 mydomain spamd[2272]: spamd: setuid to office.recipientdomain succeeded Oct 26 11:37:40 mydomain spamd[2272]: spamd: processing message 4CE924B89F57B74EA5A7EC2A4844B5FC133E0E@lawdc.LEGAL.local for office.recipientdomain:522 Oct 26 11:37:48 mydomain spamd[2272]: spamd: clean message (-105.2/3.0) for office.recipientdomain:522 in 7.3 seconds, 230129 bytes. Oct 26 11:37:48 mydomain spamd[2272]: spamd: result: . -105 - AWL,BAYES_00,HTML_IMAGE_RATIO_06,HTML_MESSAGE,RCVD_IN_DNSWL_MED,USER_IN_WHITELIST scantime=7.3,size=230129,user=office.recipientdomain,uid=522,required_score=3.0,rhost=mydomain.com,raddr=127.0.0.1,rport=35040,mid=4CE924B89F57B74EA5A7EC2A4844B5FC133E0E@lawdc.LEGAL.local,bayes=0.000000,autolearn=ham Oct 26 11:37:48 mydomain spamd[26585]: prefork: child states: II Oct 26 11:37:48 mydomain postfix/local[13121]: EE129CDCD52: to=office.recipientdomain@mydomain.localdomain, orig_to=office@recipientdomain.ca, relay=local, delay=14, delays=5/0.01/0/8.5, dsn=2.0.0, status=sent (delivered to command: /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME) Oct 26 11:37:48 mydomain postfix/cleanup[13118]: D7825CDCD67: message-id=4CE924B89F57B74EA5A7EC2A4844B5FC133E0E@lawdc.LEGAL.local Oct 26 11:37:48 mydomain postfix/qmgr[26296]: D7825CDCD67: from=barry@senderdomain.ca, size=233371, nrcpt=1 (queue active) Oct 26 11:37:48 mydomain postfix/local[13121]: EE129CDCD52: to=office.recipientdomain@mydomain.localdomain, orig_to=office@recipientdomain.ca, relay=local, delay=14, delays=5/0.01/0/8.5, dsn=2.0.0, status=sent (forwarded as D7825CDCD67) Oct 26 11:37:48 mydomain postfix/qmgr[26296]: EE129CDCD52: removed Oct 26 11:37:49 mydomain spamd[2272]: spamd: connection from mydomain.com [127.0.0.1] at port 35042 Oct 26 11:37:49 mydomain spamd[2272]: spamd: setuid to al.recipientdomain succeeded Oct 26 11:37:49 mydomain spamd[2272]: spamd: processing message 4CE924B89F57B74EA5A7EC2A4844B5FC133E0E@lawdc.LEGAL.local for al.recipientdomain:520 Oct 26 11:38:00 mydomain spamd[2272]: spamd: clean message (-103.6/3.0) for al.recipientdomain:520 in 11.0 seconds, 230286 bytes. Oct 26 11:38:00 mydomain spamd[2272]: spamd: result: . -103 - AWL,BAYES_00,HTML_IMAGE_RATIO_06,HTML_MESSAGE,USER_IN_WHITELIST scantime=11.0,size=230286,user=al.recipientdomain,uid=520,required_score=3.0,rhost=mydomain.com,raddr=127.0.0.1,rport=35042,mid=4CE924B89F57B74EA5A7EC2A4844B5FC133E0E@lawdc.LEGAL.local,bayes=0.000000,autolearn=ham Oct 26 11:38:00 mydomain spamd[26585]: prefork: child states: II Oct 26 11:38:00 mydomain postfix/local[13121]: D7825CDCD67: to=al.recipientdomain@mydomain.localdomain, orig_to=office@recipientdomain.ca, relay=local, delay=21, delays=8.5/0/0/12, dsn=2.0.0, status=sent (delivered to command: /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME) Oct 26 11:38:00 mydomain postfix/qmgr[26296]: D7825CDCD67: removed