Problem to send email to gmail

[nanoanxo]

Hi,
I tried to configure my CentOS 7 server, to install PandoraFMS to send us server alerts, but, when I tried to configure it, I found these problems:

https://ibb.co/fQ6haR

But, on the other hand, if I try to ping to smtp.gmail.com, I’m be able to do it, but i don't receive any email:

https://ibb.co/g9AfUm

I followed this guide, https://wiki.pandorafms.com/index.php?t ... tas_emails, but i am not able to install it.

Could you help me, please?

Thanks so much.

[TrevorH]

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