How to set up the DNS TXT zone for SPF, DKIM, and DMARC and how to prevent business e-mail messages from being rejected by Gmail - Mail delivery failed

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AdministratorSevere private email businesses for business often face a lot of problems and challenges. From the SPAM waves to be blocked by specific filters, the security of correspondence in the local e-mail server and remote servers, the configuration and monitoring of SMTP, POP, IMAP services, plus many and many other SPF configuration details, Read More