![]() ![]() The SPF record doesn’t explicitly state that the IP address is authorized to send for the domain. The receiving server will typically accept the message but mark it as suspicious. ![]() It's unlikely that the server with matching IP address is authorized to send for the domain. The SPF record doesn’t include the sending server IP address or domain so messages won’t pass authentication. The server with matching IP address is not authorized to send for the domain. This is the default action when the mechanism doesn’t use a qualifier.įails authentication. The server with matching IP address is authorized to send for your domain. QualifierĪction receiving server takes with a match DOMAINER DEFINE HOW TOUse these optional qualifiers to tell receiving mail servers how to handle messages that match mechanisms in the SPF record. When there's no mechanism match, the action default is neutral: the message doesn't pass or fail authentication. If a mechanism doesn’t have a qualifier and there’s a match, the default action is pass authentication. Mechanisms are checked in the order they occur in the SPF record. The all mechanism has a fail qualifier ( - ), so messages from any other senders fail the SPF check and may be rejected by the receiving server. In this example, the SPF record authorizes only Google Workspace to send emails for your domain. Qualifiers tell the receiving mail server whether to consider a message authenticated when there's a match with a mechanism value, for example: Tip: To prevent spoofing of domains that don’t send email, use this as the SPF record for the domain: vspf1 ~allĪ qualifier is an optional prefix you can add to any mechanism in your SPF record. If your SPF record isn’t set up correctly, the fail qualifier might cause more messages from your domain to be sent to spam. When an SPF record includes -all ( fail qualifier), receiving servers may reject messages from senders that aren't in your SPF record. When an SPF record includes ~all ( softfail qualifier), receiving servers typically accept messages from senders that aren't in your SPF record, but mark them as suspicious. Any mechanism that comes after the all mechanism in an SPF record is ignored. This must be the last mechanism in the SPF record. We recommend you always include this mechanism in your SPF record. Specifies that all incoming messages match. If this mechanism isn't in your SPF record, the default value is the MX records of the domain where the SPF record is used.Īuthorize third-party email senders by domain, for example: Ip6:3FFE:0000:0000:0001:0200:F8FF:FE75:50DFĪuthorize mail servers by domain name, for example:Īuthorize one or more mail servers by domain MX record, for example: The value must be an IPv6 address or range in standard format, for example: The value must be an IPv4 address or range in standard format, for example:Īuthorize mail servers by IPv6 address or address range. This mechanism must be:Īuthorize mail servers by IPv4 address or address range. This tag is required, and must be the first tag in the record. ![]() Learn more in Check the DNS lookups in your SPF record. Your TXT record for SPF shouldn’t include more than 10 references to other domains or servers. ![]()
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