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Plesk 8.2 - New Domain Created Email Doesnt Work

I have a new Plesk 8.2 server, setup a domain on it and the website is working properly, however when I use http://webmail.domainname.com, I login, and cant send or reply to any emails.

I get the error: There was an error sending your message: unable to add recipient [<email address>]: Invalid response code received from server.

I believe it is using horde as the address in internet explorer is http://webmail.domainname.com/horde/imp/compose.php

I'm not sure what to do as I dont have much experience with Plesk/Horde.
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Commented:
I think the email address you created is not configured to allow relay, check it.

Author

Commented:
Relaying is selected as 'closed'

and I have 127.0.0.1 and the servers external addresses in the 'use no relay restrictions for the following networks'

Commented:
change relaying to
select authentication is required and select smtp option
also add your ip with mask 24 to ip list

Author

Commented:
My hosting company fixed the issue - looks like if you are sending to a domain hosted on the same server and have the 'mail' feature turned on - it messes with being able to send mail to the domain. They Disabled mail for the domain, and it started working fine!

Commented:
then how will you set up mails accounts for your domain then if it is disabled
Commented:
The initial problem was I am hosing a domain name with email; and a website for a domain name with Exchange hosted elsewhere.

When sending from the domain name that had email hosted to the Exchange hosted domain, I got the error.

Disabling the email service for the Exchange hosted domain name fixed this issue.

Commented:
Closed, 250 points refunded.
Vee_Mod
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