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WelshHybrid -> Undeliverable 550 Error (13.Nov.2006 7:57:04 AM)
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When we try to send an email we get the following Undeliverable report:
Your message did not reach some or all of the intended recipients.
Subject: RE: Test Message[Scanned]
Sent: 13/11/2006 12:22
The following recipient(s) could not be reached:
Welsh Hybrid on 13/11/2006 12:22
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<Ourdomain.co.uk #5.5.0 smtp;550 usernamed@Ourdomain.co.uk>... Not permitted
I've searched to try and get an answer, but most of what comes back is confusing for a newbie like me. Can anyone help me to resolve this.
We are using SBS 2003 premium, with Exchange 2003.
Thank you in advance.
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