smtp 550: Sender verify failed with incorrect reverse DNS record

Eileen_Brown — Fri, 30 Mar 2007 16:20:00 GMT

Here's an interesting post from Mark Wilson which he's allowed me to reproduce here. Often Exchange and messaging problems are not the fault of the application, but often an underlying issue further down the stack. DNS is often the culprit too, so Mark's article is useful when troubleshooting smtp 550 errors.

You can read his article here..

Creating Subject Alternative Name Certificates with Certificate Server

Eileen_Brown — Fri, 23 Mar 2007 17:57:00 GMT

Brian Reid has written an interesting piece about using Powershell to create certificate requests for other web sites that can be uploaded to Certificate Server. This allows you to have a certificate for more than one domain name. Brian uses Exchange 2007 extensions to Powershell to achieve this. It's yet another example of how powerful Powershell is to achieve the things you want to do...

His article is here...

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smtp 550: Sender verify failed with incorrect reverse DNS record

Creating Subject Alternative Name Certificates with Certificate Server