Need a little bit of help configuring Postfix/Dovecot on my Ubuntu 16.04/Virtualmin VPS for [Email, Security and Encryption]

■■■■■ VPS Server Information ■■■■■

I created a fresh Ubuntu 16.04/Virtualmin VPS which hosts both email and websites at '[login to view URL]'. I use Cloudflare for all of my domains including my VPS domain '[login to view URL]'. I have added MX ([login to view URL]), A , SPF, DKIM and DMARC TXT records for my domains which seem to be valid. All of my domains have Cloudflare SSL certificates, I have installed Cloudflare origin certificates. I have created a second virtualmin virtualserver '[login to view URL]' and added 2 test email addresses 'admin@[login to view URL]', 'info@[login to view URL]'. My server host rDNS is set to '[login to view URL]'. I have added a 'mail' virtual server alias to my '[login to view URL]' virtualmin virtual server.

■■■■■ Issue 1 - Can't receive email ■■■■■

I can't receive external emails to my VPS, I can send email locally from 'admin@[login to view URL]' to 'info@[login to view URL]' but not the other way around. I receive a "Diagnostic-Code: X-Postfix; unknown user" error on my external email account when attempting to send mail to my VPS. It is likely to be something todo with the hostname fields in Postfix.

■■■■■ Issue 2 - Spam ■■■■■

I can send emails successfully from my test email addresses using Roundcube, but they goto recipients spam folders. I have a 'SpamAssassin -1.274 RDNS_NONE' error from [login to view URL] and [login to view URL] produces a few other errors. My SPF, DKIM and DMARC records seem to be valid. I want to ensure emails for any domain I add to virtualmin go to a recipients inbox.

■■■■■ Issue 3 - Email encryption & security ■■■■■

I want to enable Dovecot IMAP/POP3 SSL and Postfix SMTP authentication and encryption for external email clients, and ensure any other configurations are based on best practices for security.

Habilidades: DNS, Linux, Administrador do Sistema, Ubuntu, Hospedagem Web

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( 0 comentários ) United Kingdom

ID do Projeto: #18771323

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Hi, I will audit complete configuration of the server and will find the issue of mail not being received and spam issue. I will also install and configure SSL/TLS on the server. I do have more than 8 years of Mais

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Hi, I will fix all these issues .I will pass all authentications and records and make sending and receiving proper. Please discuss. Thank you

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