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Month: May 2017

vCenter Appliance 6.0 U3 email notifications are not sent when multiple email addresses are defined in an alarm action

vCenter Appliance 6.0 U3 email notifications are not sent when multiple email addresses are defined in an alarm action

Recently I tried to configure email notifications on my lab vCenter Server Appliance (6.0u3), but  experience issue:  “Diagnostic-Code: SMTP;550 5.7.60 SMTP; Client does not have permissions to send as this sender” I tried to use solution from kb: https://kb.vmware.com/kb/2075153 but apparently, the solution does not work with latest 6.0.x appliance! After some research and digging deeper (header analysis ), it seems that root cause was invalid return path in the email header. To resolve this you need to edit two…

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Esxi Net.ReversePathFwdCheckPromisc Advanced setting

Esxi Net.ReversePathFwdCheckPromisc Advanced setting

During deployment of Cisco proxy appliance, we discovered a problem. According to cisco to resolve this problem “Net.ReversePathFwdCheckPromisc” should be set to “1” on ESX’s. The question is – do you know any negative effects which such change could cause. We believe that there must be a reason why by default this option is set to 0 ? That’s why I decided to figure our what it is used for. After some research I was able to find answer: Setting…

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