× Post Fix is a great tool that comes usually bundled with vps servers and handles the mailboxes.

Secure your mail and never get spoofed

3 Χρόνια 5 Μήνες πριν #106 από infogate
Secure your mail and never get spoofed δημιουργήθηκε από infogate
It is very important to deliver normally all your mails at another mailbox.
At the same time it is critical not to have your mail end up to spam folders.
Finally you need to have your mail secured and not possible to get spoofed and used by a malware.

So the correct configuration would be to have the correct mx mail records for your dns and use SP, DKIM and DMARC policy.
Always use dmark policy to reject spoofed and not authorized mails.

A good tip here is to keep your DNS records simple and not confusing.
; Zone file for yourdomain.com
$TTL 14400
yourdomain.com.      86400      IN      SOA      ns1.server.freespirits.gr.      postmaster.freespirits.gr.      (
				2020091800      ; serial, todays date+todays
						3600 ;refresh, seconds
						7200 ;retry, seconds
						1209600 ;expire, seconds
						86400      )

@ IN A
localhost.yourdomain.com. IN A
@ IN MX 0 yourdomain.com.
mail 14400 IN CNAME yourdomain.com.
pop  14400 IN CNAME yourdomain.com.
pop3 14400 IN CNAME yourdomain.com.
imap 14400 IN CNAME yourdomain.com.
webmail 14400 IN A [your ip xxx.xxx.xxx.xxx]
cpanel 14400 IN A [your ip xxx.xxx.xxx.xxx]
cwp 14400 IN A [your ip xxx.xxx.xxx.xxx]
www 14400 IN CNAME yourdomain.com.
ftp 14400 IN CNAME yourdomain.com.
_dmarc 14400 IN TXT "v=DMARC1; p=reject"

default._domainkey 14400 IN TXT "v=DKIM1; k=rsa; p=[your dkim signature]"

yourdomain.com. IN TXT "v=spf1 mx a"
@ 86400 IN NS ns2.server.freespirits.gr.
@ 86400 IN NS ns1.server.freespirits.gr.
@ 86400 IN TXT google-site-verification=[your google verification signature]

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