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

How can we block the automatic display of images in Gmail

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Currently, almost all email services block the mode default automatic display of images and data accessible through third-party servers when the emails containing them are accessed on the sites of those services (or through email clients). The reason for using this policy is to respect the privacy of users, given… Read More