I am not able to send mail using a newly setup server. I am using the current version of virtualmin on ubuntu 18.04 LTS. I am using Linode VPS. The mail.log is as follows …
Can anyone please help with advising how to sort this out and whats wrong ?
Also, I can send mail to internal users. Only externail mail is not working. Like if i want to send to gmail, etc.
It looks like your ISP (Linode?) doesn’t allow traffic to port 25 directly from your IP address, or you have blocked port 25 outbound from your server in your firewall.
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