relay another domains emails through exchange 2010

Greetings,

I set up a new send connector on 2010 for relay. Properties are

- custom connector
- local IPs are both of the 2010 servers
- remote server is the phone system IP (voicemail to email)
- authentication is externally secured
- permissions are anon users and exchange servers

I need to relay emails to another domain from the phone system which sends out emails of voicemails. We are able to receive the vm to email in our domain, but I still can't get emails to their domain to be sent.

I likely forgot to configure something on our server, but it may also have to do with our send connector and / or the smarthost (spam soap) which all emails go through in and out.

Any insight into how to get the other domain's emails out is appreciated.
LVL 7
king daddyAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

king daddyAuthor Commented:
for history, this is a question I posted about it awhile back. It was then scrapped but now they want it again. hopefully the first, very detailed post is not necessary.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_28300516.html

thx
king daddyAuthor Commented:
I found this on spam soap. 192.168.25.66 is our phone system.

Recipient Disposition: [250 Bounce (553 Validating Sender: 5.1.8 ... Domain of sender address tel=1_555_5551234@192.168.25.66 does not exist); Mode: normal; Queued: no; Frontend TLS: yes]
MaheshArchitectCommented:
You have created externally secured receive connector, right?
It seems to be configured correctly

i don't think any wrong on Exchange server, please check on smart host side, may be its not allowing relaying emails like this (Externally secured connector by pass most of the security checks)

Mahesh
Your Guide to Achieving IT Business Success

The IT Service Excellence Tool Kit has best practices to keep your clients happy and business booming. Inside, you’ll find everything you need to increase client satisfaction and retention, become more competitive, and increase your overall success.

king daddyAuthor Commented:
thanks Mahesh. I will look at the smart host.
king daddyAuthor Commented:
sorry I didnt get back to this. ended up being the phone system wasn't joined to our domain. after doing so, voicemail to email went out of the smarthost without issue.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
king daddyAuthor Commented:
gave some points to Mahesh for responding. it was resolved by having the phone system integrator join it to our domain.

thx
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.