Host mail.ecloud.global

[exyna]

Hi @Manoj
is this mail issue related to the following?:

@exyna

Also, when running your own mailserver you should take into account that you could run into problems with sending mails to specific providers. Especially Microsoft is hard to handle here. They use the bad practice of banning whole IP subnets when they detect malicious activities like spam. So if one of your VPS neighbors in the same IP subnet sends spam, Microsoft will also automatically ban you. If you are lucky, mails to domains like @outlook.com or @hotmail.com will get rejected with a notice which will allow you to further take actions. But it also happens that Microsoft blackholes mails and in this scenario your mails will not arrive without you even noticing it. A solution for this would be to use a trusted SMTP-relay for specific recipients.

For a quick and future-proof workaround, I can recommend you https://www.mailjet.com/ as a SMTP relay, they also offer a 20% discount for NGOs.

Forwarding in Postfix can easily be setup with a transport map at /etc/postfix/transport