Hi,
We are using SBS2000 with around 30 Windows 2000 Pro
clients and around 2 WinXPP clients.
Our Internet connection is Broadband via our ISP
BTOpenworld. We send out emails via BTOpenworld's SMTP
server. Furthermore, we pick up emails from a POP3
account at another ISP for our domain which is xxx.co.uk
(example). BTOpenWorld have "Apparently" added our domain
name 'xxx.co.uk' to their SMTP DNS server.
The SBS's Domain is called: 'ABC' and the SBS machine name
is called 'ABC-SBS'.
Each user has a mailbox in Exchange, e.g. john@xxx.co.uk
Problem: A user tried to send an email to a recipient and
got an undeliverable (it is the correct email address!):
--------------------------------------------
There was a SMTP communication problem with the
recipient's email server. Please contact your system
administrator.
<abc-sbs.abc.local #5.5.0 smtp;554 <abc-sbs.abc.local>:
Helo command rejected: Set a valid hostname>
--------------------------------------------
Please can you tell me what the problem is?
EMails to other recipeints are OK, but this particular
recipeint is causing a problem by us getting undelierables
with the message above.
Any comments and suggestions will be appreciated.
Thanks,
skc