Error 504 when testing a new email account in Outlook 2007

[Bill_OR]

Hi,
I'm trying to add another account to Outlook 2007. All my existing accounts
(with my host ISP) work fine but this new one with a different ISP is causing
problems.
1) I can receive mail sent to the new email address - so the POP side of
things seems to be OK
2) when sending mail the email the message delivery fails and the following
error message is displayed:
504 <abcdef>: Helo command rejected: need fully-qualified hostname

where 'abcdef' has been used to replace the name of my computer.

Having Googled this error, the concensus is that it's a problem caused by
Outlook. Can anyone suggets how I can overcome this?

Thanks for your help.
regards,
Bill

 

[Roady [MVP]]

Have you configured the SMTP server for this additional ISP to use
authentication already?
See http://www.msoutlook.info/question/36

Additionally, if you have a virus scanner that integrates with Outlook,
disable/uninstall this integration and try again.
See http://www.msoutlook.inco/question/20

 

[N. Miller]

I'm trying to add another account to Outlook 2007. All my existing accounts
(with my host ISP) work fine but this new one with a different ISP is causing
problems.
1) I can receive mail sent to the new email address - so the POP side of
things seems to be OK
2) when sending mail the email the message delivery fails and the following
error message is displayed:
504 <abcdef>: Helo command rejected: need fully-qualified hostname

where 'abcdef' has been used to replace the name of my computer.

Having Googled this error, the concensus is that it's a problem caused by
Outlook. Can anyone suggets how I can overcome this?

That is a problem with the message submission server. Since most email
clients operate on computers which don't have a "Fully Qualifed Domain Name"
(FQDN), a message submission server should not expect an end user client to
provide such a name. You might experiment by changing your computer name
from, 'abcdef' to 'abcdef.home', and see if that will work.

 

[Bill_OR]

Roady,
Thanks for your reply.
Firstly I can confirm that I have been through my ISP's authentication
process for this new email address and I can send email from this account
when using my ISPs Webmail facility.
I have also tried disabling the anti-virus software (McAfee) and this did
not make any difference.
It's only if I try to send a message via Outlook that I receive a message
response from the 'System Administrator' with the 504 error message.
Any other suggestions?
Thanks,
Bill