[vps-mail] reject=553 5.1.8 - Domain of sender address does not exist

[Andrew Brosnan <andrew@xxxxxxxxxxx>]

Hello,

Some email sent to my VPS is bouncing with the following showing up in
the maillog:

Sep  9 07:22:30 broscom sm-mta[13479]: j897MUZA013479:
ruleset=check_mail, arg1=<root@xxxxxxxxxxxxxxxxxxxxxx>, relay=[clients
IP number], reject=553 5.1.8 <root@xxxxxxxxxxxxxxxxxxxxxx>... Domain of
sender address root@xxxxxxxxxxxxxxxxxxxxxx does not exist
Sep  9 07:22:31 broscom sm-mta[13479]: j897MUZA013479:
from=<root@xxxxxxxxxxxxxxxxxxxxxx>, size=8558, class=0, nrcpts=0,
proto=ESMTP, daemon=MTA, relay=[clients IP number]

While myclientsdomain.com exists, the hostname 'db' is from one of the
machines on their network and is behind a firewall.

Could anyone clue me in to why this is bouncing and what I need to do in
order to receive the mail?

Regards,
Andrew


-- 
Andrew Brosnan - Broscom LLC - 1 207 925-1156
andrew@xxxxxxxxxxx - http://www.broscom.com
Websites, Hosting, Programming, Consulting

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