No more SMTP inbound after upgrading Microsoft Azure Windows server VM

Question

After I upgraded my Azure VM, for Windows server 2012, from Standard D1 to Standard D2 there is no more incoming SMTP into \Inetpub\mailroot\pickup. IE. If I send email to this server, no email arrives in pickup\ anymore.

How do I re-configure/re-start SMTP?

Server Mgr > Local Server > Services > SMTPSVC is running & Automatic IIS6 MGR > local computer > SMTP Virtual Server #1 > Domains are all still there

I ran Wireshark and see incoming emails getting to this Windows Server VM, but not getting to: \Inetpub\mailroot\pickup\

Answer 1

Here is the problem and solution...

Solution: At VM Windows, control panel > Admin.. > IIS6 > right-click: SMTP Virtual Server > Properties > IP address > Pull-down and select VM's present private IP. You can see the private IP at VM's Microsoft dashboard, or: Window server > power shell > type ipconfig, and that will show it.

PROBLEM: Microsoft failed to report to me that it changed the private IP of my Microsoft Azure server when I did upgrade of VM from Standard D1 to Standard D2.

Answer 2

Incoming SMTP arrives into Drop folder. Pickup is for outgoing email.