SPF record Sender Policy Framework

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SPF ( Sender Policy Framework ) is an email authentication mechanism that is used to prevent sender spoofing. An SPF record is a DNS record that determines which servers are authorized to send email on behalf of a particular domain.

When a mail recipient receives a message from a particular domain, they can check the SPF record of that domain to see if the server that sent the message is a valid sender. The process of an SPF record is as follows:

The sender sends a message to the recipient's address.
The recipient's server receives this message and checks greece email list the sender's domain.
The recipient's server checks the SPF DNS record for the sender's domain.
An SPF record specifies a list of trusted servers that are authorized to send email on behalf of that domain.
The recipient's server compares the IP address of the server that sent the message with the domain's SPF record.
If the IP address of the sender's server is present in the list of trusted servers in the SPF record, the message is considered authentic and is passed on for delivery to the recipient's mailbox.
If the sending server's IP address does not match the SPF records, the message may be marked as suspicious or rejected, depending on the recipient server's settings.
An SPF record is typically a DNS TXT text record that contains information about which servers are allowed to send mail for a given domain. An SPF record can include a list of IP addresses, IP address ranges, or domain names of servers that are allowed to send mail.