What is necessary at the OS level to enable sending of eMail through SendMail? I have two servers, both running Windows Server 2008 R2. I copied the database and the web files from "server A" to "server B", so the DNN configuration is identical. Both refer to 127.0.0.1 for the SMTP Server / Port value and send using Anonymous SMTP authentication.

I can send mail using the Test option (under SMTP Server Settings) on Server A but it fails on Server B, with the following message.

"There is a problem with the configuration of your SMTP Server. Mail was not sent."

As I say, these are identical copies at the DNN level (database and files). I also see the "SMTP eMail" configuration under IIS but these are again identical on both servers. So, I'm assuming I need to configure something at the OS level.

Any pointers?

Thanks.

Mark

Thanks Chris. This is a tad embarrassing but I'll be darned if I can recall installing an SMTP server on Server A. My domain does have an SMTP service but it's hosted (Office 365) and I don't do anything specific to point to it - but it seems to work :) The only difference between Servers A and B is that Server is a member of my domain (*.com), whereas I am using localhost for all access on Server B.

So, I either have an SMTP server installed which I don't know about (yikes!) or eMail is automatically finding its way to the hosted SMTP server.

Thanks.

Mark

 

If you have access to RDP into the servers, look at Server A to see if it has a local SMTP server running (it must if it works)

As Mark suggests, using another mail server (pointing the SMTP Settings to that) is preferable

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Chris Hammond
Former DNN Corp Employee, MVP, Core Team Member, Trustee
Christoc.com Software Solutions DotNetNuke Module Development, Upgrades and consulting.
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