Exchange server 2013 unable to send emails from application

hi Experts,

We installed Exchange 2013 on our client site. Everything is working fine (users can send/receive emails)
only problem we are having is, though I am authenticating from application I am not able to send emails.

We tested it on three applications and we got same problem.

I know you can create  an internal relay and ipaddress of computer that you want to send emails from, but we will installing it on all client computers.
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ukitsmeAsked:
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Sushil SonawaneCommented:
Add your complete subnet ip address or IP address range in internal relay to resolve your issue.

For info refer below  link:

http://exchangeserverpro.com/exchange-2013-configure-smtp-relay-connector/

http://glazenbakje.wordpress.com/2012/12/30/exchange-2013-how-to-configure-an-internal-relay-connector/
Vijaya Babu SekarAssociate Ops ManagerCommented:
If you added an application server's IP to receive connector it should work. Could you please In application servers have how many NIC or how IPs are configured. If you configured more than one IP address. You would need to add all IP address to receive connector including NLB also.

Thanks.
ukitsmeAuthor Commented:
hi  Sushil Sonawane,

I know I can create a internal relay, but my point is when I authenticate in an application shouldn't it just allow users to send an email.

What in the event here is a virus attack on client computer?

hi Vijaya Babu Sekar,

The server which I am trying this from has only one ipaddress.
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ukitsmeAuthor Commented:
Might be this might help.

I am able to send emails internally from application
ukitsmeAuthor Commented:
Got in contact with Microsoft.
I deleted all receive connectors and recreated them with exact same settings.
Microsoft asked us to un-tick Enable domain security and offer basic authentication only after starting TLS under security for both default and default frontend.


I dont know which one of it fixed it (me recreating receive connectors or changing security settings), but it is working now.

Anyways thanks for comments guys.

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ukitsmeAuthor Commented:
Thanks
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