2009/4/4 <nr...@firstfinancial.org>: > > Apr 3 23:32:11 mail postfix/smtp[6451]: 96B0EB8: to=<df...@yahoo.com>, > relay=b.mx.mail.yahoo.com[66.196.97.250]:25, delay=0.38, > delays=0.28/0.01/0.05/0.04, dsn=5.0.0, status=bounced (host > b.mx.mail.yahoo.com[66.196.97.250] said: 554 delivery error: dd This user > doesn't have a yahoo.com account (df...@yahoo.com) [-5] - > mta241.mail.re3.yahoo.com (in reply to end of DATA command)) > Apr 3 23:32:11 mail postfix/cleanup[7281]: 2ACDFBA: > message-id=<20090404033211.2acd...@mail.firstfinancial.org> > Apr 3 23:32:11 mail postfix/bounce[31334]: 96B0EB8: sender non-delivery > notification: 2ACDFBA
Show more logs. 96B0EB8 is the failed delivery to yahoo, 2ACDFBA is the non-delivery notification that postfix will attempt to pass back to Exchange. You need to find where that non-delivery notification has gone.
