Exchange 5.5 SMTP Problem?

[Maritime]

Hi,

I'm running Exchange 5.5 and I've currently installed a Third part application (on the Exchange server) that needs to send mail. This is a Web based app and when I attempt to send email, I receive the following error:

The following errors were encountered:
LBE_mail.SendSMTPMailMessage:
-2147418113 The message was undeliverable. All servers failed to receive the message

The supplier says that my Exchange Server is not accepting SMTP request. When I run telnet to connect to my mailserver's smtp port and try to send an email I get an error saying "502 unimplemented" I have checked my configuration on Exchange, but I can't figure out what's happening? My Exchange routing config is as follows.

"Reroute incoming SMTP mail"
"sent to mydomainname is routed as inbound.

Any assistance would be greatly appreciated.

 

[ShackDaddy]

What user context is the web-app running in? Does it have the ability to authenticate?

Check your Internet Mail Service -> Connections tab to see who you are accepting connections from.

More importantly: under the Servers list, in the Protocols area for your server, open the properties for POP3 and make sure it's enabled.

ShackDaddy

 

[Maritime]

Hi Shack

Thanks for responding. The web-app does not sem to have the ability to authenticate.

My Internet mail service is configured as I stated above
Reroute incoming SMTP mail is selected and the routing info states
Mail sent to: xxx@mycompany.ho
Route To <inbound>

In Protocols, POP3 is enabled.