Exchange 2007 Help

[LFC]

Hi guys, hope someone can please assist. Setup a simple SBS2008 Server with Exchange 2007.

Using the POP3 connector to pull mail from the customers ISP - Works Fine

Sends mail via smarthost which is set to smtp.isdsl.net - Works Fine

Customer has a few people that are not on the domain or configured in exchange, they still pull mail directly from the ISP. Problem is when the Exchange users send to them they get the following error.

Error is #550 5.1.1 RESOLVER.ADR.RecipNotFound

As the domain matches, it is probably checking AD first and does not find the user.

Hope this makes sense, any ideas?

Thanks

 

[ivusi]

Thats exactly the problem - because the other users are using exactly the same domain as your users - the Exchange server is looking for them in AD - hence error. Why dont you pull them into the domain?

 

[LFC]

Thats exactly the problem - because the other users are using exactly the same domain as your users - the Exchange server is looking for them in AD - hence error. Why dont you pull them into the domain?

Hi, thanks for the reply. They are 'remote' users, don't come into the office and only require POP mail.

Any other way around this?

 

[ivusi]

What you need to do is the following:-
1) Ask your ISP to change your MX records for your domain to their mail servers
2) Abandon the POP3 option and use exchange as a SMTP server
3) Configure firewall to accept port 25 only from your providers email servers
4) Create the remote user accounts on exchange and give them access via OWA
5) Bask in the glow of happiness from your boss, ask for raise and have a cold beer !

 

[LFC]

Thanks for that info, will have to discuss it with them.

 

[AstroTurf]

OWA / MSTSC / VPN 4 the win

 

[ivusi]

Thanks for that info, will have to discuss it with them.

Let me know it goes - I will be happy to help wherever I can!

 

[LFC]

Will do man

Might have found something here http://blogs.technet.com/b/sbs/arch...cepted-domains-in-sbs-2008-exchange-2007.aspx

Internal Relay – Exchange accepts email for this domain, but is not the authority for all of its mail delivery, meaning that some recipients in this domain do not have mailboxes in the Exchange Organization. This is synonymous with disabling “This Exchange Organization is responsible for all mail delivery to this address” in Exchange 2003 recipient policies.

The common example that we see in SBS for this type of domain is with the use of the POP3 Connector, where a customer has configured SBS to share the same SMTP namespace as their ISP. If USERA@contoso.com has a mailbox at both the ISP and on SBS, but USERB@contoso.com only has a mailbox at the ISP, then configuring an Internal Relay accepted domain in addition to the existing SMTP connector will allow SBS 2008 mailbox users to send email to USERB.

I think this might be the solution

 

[ivusi]

That looks like it will do it! - Just a couple of questions:-
1) If you have an e-mail system like Exchange why are you using a POP3 connector to your ISP? I obviously don't know your full set up, but to me it doesn't make sense.
2)How do you manage the e-mail backups of your remote users?

Cheers

 

[LFC]

Made the change yesterday and it working

Yeah we should be using it properly but i guess with 8 users and a DSL line(no static IP), it's a bit simpler this way, they only have 2 remote users.

No backups are made for remote users at the moment.

Thanks for the advice so far, appreciate it