SPF meaning in Messaging ?

Answer: What is Sender Permitted From mean?

Sender Policy Framework (SPF) is an email authentication method designed to detect forging sender addresses during the delivery of the email. SPF alone, though, is limited to detecting a forged sender claim in the envelope of the email, which is used when the mail gets bounced. Only in combination with DMARC can it be used to detect the forging of the visible sender in emails (email spoofing), a technique often used in phishing and email spam.

SPF allows the receiving mail server to check during mail delivery that a mail claiming to come from a specific domain is submitted by an IP address authorized by that domain's administrators. The list of authorized sending hosts and IP addresses for a domain is published in the DNS records for that domain.

Sender Policy Framework is defined in RFC 7208 dated April 2014 as a "proposed standard".

reference

Full Form	Category
Space Power Facility	Academic & Science
Sine Prole Femina	Academic & Science
Skin Protection Factor	Academic & Science
Portuguese Society of Physics	Academic & Science
Sociedade Portuguesa de Física	Academic & Science
Spruce Pine Fir	Academic & Science
Sale Pending Funds	Accounts and Finance
Spearfish (sd)	Airport Code
Society for the Propagation of the Faith	Associations & Organizations
Standard Policy Form	Business
Standard Pacific Corporation	Business
Site Point Forums	Community
Sustainable Performance Forum	Community
Sygate Personal Firewall	Computing
Stack Pointer Fetch	Computing
Stateful Packet Filter	Computing
Stealthy Packet Filter	Computing
Static Packet Filter	Computing
Spool File	Computing
Source Physical File	Computing
Slide Presentation File	File Type
Synthetic Pigment Feature	General
Sizzle People Fast	General
Serious Pennsy Fan	General
Skate Park Formula	General
Small Poisonous Frogs	General
Stephen Paul Farber	General
Sun Play Fun	General
Spruce Pine And Fir	General
Smart People Factory	General
Should Put First	General
Strategic Prevention Framework	General
Structured Page Fragments	General
Sandals Parental Fun	General
Sunburn Protection Factor	General
Same Pretty Face	General
Spacecab Fahrerh	General
Safety Performance Function	General
Super Plastic Forming	General
Sergio Pinin Farina	General
Scat Pack Forums	General
Statutory Provident Fund	Governmental
Southern Powerlifting Federation	Governmental
Singapore Police Force	Governmental
STUARTPURAM	Indian Railway Station
Sender Policy Framework	Information Technology
Sold Pending Funds	Internet
Shortest Path First	Maths
Satisfactory Productive Flatulence	Medical
Sun Protection Factor	Medical
Sunscreen Protection Factor	Medical
Specific Pathogen Free	Medical
Snape Protection Factor	Medical
Sender Permitted From	Messaging
Sphincter Pucker Factor	Messaging
Single Project Funding	Military and Defence
State Portal Framework	Ministry of Communications and Information Technology
Safety Promise Found	Softwares
Sunbelt Personal Firewall	Softwares
Single Point Failure	Space Science
Software Production Facility	Space Science
Spacelab Processing Facility	Space Science
Summertime Phone Functionality	Telecommunication
Black Hills Airport	Transport & Travel