We have had our 7.x firewall up for a while. This problem is that we are losing some emails with the following error. It doesn't happen with every email. But it happens with some and all of them are from our satellite office. They get their mail with pop3 and send with relay authenticated to our internal Active Directory. This is working fine and perhaps one out of every 20 messages going from one of our external users to internal uses gets caught. The rest are fine and I can't find any particular pattern.
Support has no clues.
2007:12:18-09:42:24 (none) exim[10218]: 2007-12-18 09:42:24 1J4deI-0002eo-OA EXTERNALUSER@ourtown.ma.us U=MailerDaemon P=local-bsmtp S=6387 id=000201c84184$0b025590$bb01a8c0@admin
2007:12:18-09:42:24 (none) exim[10219]: 2007-12-18 09:42:24 1J4deI-0002eo-OA lowest numbered MX record points to local host: town.brewster.ma.us
2007:12:18-09:42:24 (none) exim[10219]: 2007-12-18 09:42:24 1J4deI-0002eo-OA == INTERNALUSER@ourtown.ma.us R=dnslookup defer (-1): lowest numbered MX record points to local host
2007:12:18-09:42:24 (none) exim[10219]: 2007-12-18 09:42:24 1J4deI-0002eo-OA Frozen
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