This is completely normal. You'll have to authenticate to forward to external addresses.
Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Eric [mailto:[email protected]] Sent: Tuesday, June 14, 2011 11:42 PM To: MS-Exchange Admin Issues Subject: Unsolved Forwarding Issue I am trying to help a small organization move to a hosted Exchange environment. As part of the process we are trying to setup forwarding on the mailboxes that have been moved to the new environment. If I setup forwarding to an internal mailbox on our Exchange server, forwarding works. Once I configure the mailbox to forward to an external address ([email protected]<mailto:[email protected]>) and send from an external address the forwarding fails. But if I send from an internal mailbox, it forwards to the externally hosted address. I get the following error from the SMTP logs for externally sent email: 550+5.7.1+Unable+to+relay+for+user<mailto:[email protected]>@<mailto:user@t>hostedaddress.com The logs show the initial SMTP connection from my external domain and then another connection frowarding/relaying to the hosted addresses. I am not sure if this is normal for Exchange SMTP logs so hopefully someone else has seen this possibly. I didn't design the system and unfortunately the admin doesn't seem to "remember" many of the details of the design. They are using a Barracuda firewall/spam filter device which I've never personally used and don't have access to yet. Any help or ideas would be greatful so I can get this project completed soon hopefully :) Thank You, Eric --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe exchangelist
