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How-To Software Technical

O365: The target mailbox doesn’t have an SMTP proxy matching

Hello All, I am still working with some Office 365 issues. This one involves me off-boarding a previously migrated account back to my on-premise Exchange Server.     I had entered the wrong domain for “Target Deliver Domain” which caused the migration to fail with the following error: The target  mailbox doesn’t have an SMTP […]

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How-To

Using Gmail as my SMTP server

In the past I use to host my own email server here at the SOHO of jermsmit.com.  Today I found myself in need of setting up alerts for some of my network based equipment. So I used Gmail (thanks Google) for this task. To make this work you need the following: A gmail account (make […]

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How-To Software Technical

Primary target IP address responded with: “451 5.7.3 Cannot achieve Exchange Server authentication.”

In my previous post I was banging my head over an Exchange 2013 issue. I was able to finally resolve it. And it took some steps to do so… 451 4.4.0 Primary target IP address responded with: “451 5.7.3 Cannot achieve Exchange Server authentication.” After an Exchange 2013 Install I found myself having issues with […]

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Software Technical

DIY: Black Holes (in Exchange Server)

Create a distribution group Be sure that there are no members in this distribution list/group. Add the SMTP addresses of the ex-employees or address to the distribution list/group, if account exists.  Add them as secondary SMTP addresses to the distribution list/group address. *note* enter the properties and change the delivery reports; and set it not […]