VaultWarden deployd using Coolify it uses Docker Compose .SMTP not working

Hi,
I deployed Vaultwarden on Coolify. Now the thing is I configured all environment variables.
But still, when I sent the invitation, it was not received. I confirm there are no firewall inbound and outbound rule issues. I also did log streaming, so it’s saying it’s working fine.
Logs of this SMTP are not showing any email sent or something like that.
Kindly Help
Thanks