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faziz
Contributor
Contributor

Host standalone backup

I have esxi standalone , I assigned vmnic with new vswitch and vmkernal IP within backup network, the backup team use software to add our esxi host to their backup software but it show to them error "vmware credential validation failed cannot connect on socket 25"

Where could be the issue, please support

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scott28tt
VMware Employee
VMware Employee

What backup software?

What license do you have for your ESXi host?

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faziz
Contributor
Contributor

Veritas the backup tool, and license is Vmware vsphere 6 foundation for embedded OEMs, with features one of them storage/vsphere APIs

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imatacic
Enthusiast
Enthusiast

Did you checked this KB from Veritas support? 

https://www.veritas.com/support/en_US/article.100002052

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faziz
Contributor
Contributor

Article mentioned "This port and service are not present on a Virtual Center Server/ESX Host and will result in a "cannot connect on socket" failure."

What port/service need to check on esxi , as I checked port 902 and 443 allowed

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BarryGrowler
Enthusiast
Enthusiast

The mix-up with port 25 is unusual for ESXi-Veritas communication. This port is typically for SMTP, not backup tasks. I'd suggest checking Veritas's configuration to make sure it's aiming at the right ports (443 for HTTPS, 902 for VMware console communications) and not mistakenly set to use port 25. Also, give your firewall and network settings another look to confirm nothing's blocking essential backup traffic. Sometimes, unexpected blocks or misconfigurations can lead to such errors.

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