I can't send emails through roundcube nor outlook

[Artynok]

Good day. I'm new with vesta, I found it very amazing for some videos that I sawon youtube. I decided to install it on my google cloud instance. I created my own nameservers, so they're managed from vesta and updated as hostnames and nameservers in my domain registrar.

I did some research to make work some parts that was failing, one of them roundcube webmail. When I finally got the roundcube working I test it sending a mail to my personal account, I waited 20 minutos and nothing about it in the inbox.

So I started to search about it and I found this tool https://mxtoolbox.com/ and with that, detected 2 problems

1. The lack of a decent dmarc TXT record
So I added it to my domain


2. "Reverse DNS does not match SMTP Banner"
For that I added the right line to the exim4 config



and found this information https://serverfault.com/questions/77960 ... ute/815598 , so I followed the steps on my instance.

Tested again, but it's still failing it. Please help I'm very confused at this point what else could be?

[HenrysCat]

Google cloud blocks outgoing port 25 by default and as far as I know they will not open it for you, your only choice is to use a third party service like sendgrid or mailgun, or even switch to a VPS provider and then ask them to open port 25 (they will also block by default but are more willing to open if asked)
Hope this helps.