What is the maximum number of DNS lookups allowed in an SPF record?
What does a '~all' mechanism in SPF signify?
What SPF mechanism allows for IP addresses?
What DNS record type is used for SPF?
Does the 'all' mechanism in SPF always mean a hard fail?
What SPF qualifier denotes a hard fail?
Can an SPF record contain multiple 'v=spf1' declarations?
What SPF mechanism refers to other SPF records?
Does SPF authenticate the 'From' header directly?
What is the purpose of the 'ptr' SPF mechanism?
Does SPF apply to the 'Return-Path' address?
What SPF mechanism includes the A records of a domain?
What happens if an SPF record is missing?
Does SPF protect against display name spoofing?
What is the significance of the 'v=spf1' tag?
What SPF qualifier allows mail but marks it as suspicious?
Does the 'redirect' mechanism in SPF count towards the lookup limit?
What SPF mechanism includes the MX records of a domain?
Can an SPF record use both 'ip4' and 'ip6' mechanisms?
What SPF qualifier denotes a neutral result?
Does SPF prevent all types of email spoofing?
What is the maximum length of an SPF TXT record string?
Does the 'exists' mechanism in SPF check for a record's existence?
What SPF mechanism refers to another domain's SPF record?
Does SPF allow for CIDR notation in 'ip4' and 'ip6' mechanisms?
What SPF qualifier indicates a pass result?
Does an SPF record require a final 'all' mechanism?
What SPF mechanism includes the IP addresses of the sending domain?
Can an SPF record have an 'include' mechanism that points to itself?
What SPF mechanism should be used to explicitly deny all other senders?
Does SPF apply to subdomains by default?
What is the purpose of the SPF 'a' mechanism?
Does an SPF record need to be in a specific order?
What SPF mechanism references the mail exchanger records?
Does an SPF record validate the domain of the email sender?
What is the effect of an SPF record with no 'all' mechanism?
Does the 'exp' modifier in SPF notify the sender of failures?
What SPF mechanism checks for a valid pointer record?
Does SPF authenticate the 'Mail-From' address?
What is the maximum number of terms in an SPF record string?
Does SPF require DNSSEC for validation?
What SPF mechanism should be used for a specific IP address?
Does SPF allow for comments within the record string?
What is the difference between '-all' and '?all' in SPF?
Does an SPF record affect inbound mail filtering?
What SPF mechanism specifies a list of IP addresses?
Does SPF check for a digital signature?
What is the impact of exceeding the SPF DNS lookup limit?
Does an SPF record need to be at the root domain?
What SPF mechanism indicates that a domain should send no mail?
Does SPF record syntax use spaces or semicolons?
What is the purpose of the 'redirect=' modifier in SPF?
Does SPF protect against unauthorized relaying?
What SPF mechanism is commonly used to authorize third-party senders?
Does an SPF record ensure email deliverability?
