Spam with postfix

[nsarantopoulos]

SYSTEM INFORMATION
OS type and version	centos 7 min
Virtualmin version	virtualmin 7

how we can configure postfix to not sending spam emails

thank you

[jimr1]

@nsarantopoulos

how we can configure postfix to not sending spam emails

What do you mean ?
post up some of you mail log so we can see what you mean …
or do you mean mail sent from your server ends up in the recipient’s spam folder ?

[nsarantopoulos]

yes like that, but gmail and yahoo rejecting my emails

thank you

[jimr1]

You are using all the required filters like spf dkim & dmarc ?

[nsarantopoulos]

is there a tutorial somewhere to configure those?

thank you

[calport]

Not a tutorial, but see:

Need help about DKIM concept & setup

In order for email sent by your server to get past spam filters, of say Gmail, it is necessary to configure SPF, reverse DNS and DKIM correctly, so if you are enabling the latter on your Virtualmin box that would be the correct remedy. No. You are not required to manually add domains here that are already assigned to virtual servers and aliases that you have created in Virtualmin. Yes and no: when you enabled DKIM under Virtualmin --> Email settings --> DomainKey Identified Mails, Virtualmi…

And also:

DKIM Setup Questions

Correct. This is via Virtualmin >> Email Settings >> DomainKeys Identified Mail Correct. When virtual servers are created, Virtualmin takes care of its configuration if DKIM has already been enabled on the system. You do not need to manually add domains to the text area captioned ‘Additional domains to sign for’. Year is meaningless. I use the hostname, e.g. vps01, so the DNS record looks like vps01._domainkey.domain.com and in future if I migrate domain.com to vps02, this naming system off…