You are viewing this page in an unauthorized frame window. This is a potential security issue, you are being redirected to https://csrc.nist.gov . An official website of the United States government Here’s how you know Here’s how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock ( Lock Locked padlock icon ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Search Search CSRC MENU Search Search Projects Publications Expand or Collapse Drafts for Public Comment All Public Drafts Final Pubs FIPS (standards) Special Publications (SP s ) IR (interagency/internal reports) CSWP (cybersecurity white papers) ITL Bulletins Project Descriptions Journal Articles Conference Papers Books Topics Expand or Collapse Security & Privacy Applications Technologies Sectors Laws & Regulations Activities & Products News & Updates Events Glossary About CSRC Expand or Collapse Computer Security Division Cryptographic Technology Software Security Group Hardware Security Group Security Engineering and Risk Management Applied Cybersecurity Division Cybersecurity and Privacy Applications National Cybersecurity Center of Excellence (NCCoE) National Initiative for Cybersecurity Education (NICE) Contact Us Information Technology Laboratory Computer Security Resource Center Publications NIST SP 800-45 Version 2 Guidelines on Electronic Mail Security Share to Facebook Share to X Share to LinkedIn Share ia Email Documentation Topics Date Published: February 2007 Supersedes: SP 800-45 (09/11/2002) Author(s) Miles Tracy (Federal Reserve Information Technology) , Wayne Jansen (NIST) , Karen Scarfone (NIST) , Jason Butterfield (BAH) Abstract This document was developed in furtherance of NIST's statutory responsibilities under the Federal Information Security Management Act (FISMA) of 2002, Public Law 107-347. The purpose of the publication is to recommend security practices for designing, implementing, and operating email systems on public and private networks. It contains information on popular email encryption standards and other standards relating to email. It presents general information on securing mail servers' operating systems and specific guidance on securing mail server applications, protecting messages traversing servers, and securing access to mailboxes. It also provides information regarding email client security and mail server administration. This document was developed in furtherance of NIST's statutory responsibilities under the Federal Information Security Management Act (FISMA) of 2002, Public Law 107-347. The purpose of the publication is to recommend security practices for designing, implementing, and operating email systems on... See full abstract This document was developed in furtherance of NIST's statutory responsibilities under the Federal Information Security Management Act (FISMA) of 2002, Public Law 107-347. The purpose of the publication is to recommend security practices for designing, implementing, and operating email systems on public and private networks. It contains information on popular email encryption standards and other standards relating to email. It presents general information on securing mail servers' operating systems and specific guidance on securing mail server applications, protecting messages traversing servers, and securing access to mailboxes. It also provides information regarding email client security and mail server administration. Hide full abstract Keywords email ; electronic mail ; FISMA Control Families Access Control ; Audit and Accountability ; Configuration Management ; Contingency Planning ; Identification and Authentication ; Planning ; Risk Assessment ; System and Communications Protection ; System and Information Integrity Documentation Publication: https://doi.org/10.6028/NIST.SP.800-45ver2 Download URL Supplemental Material: None available Related NIST Publications: SP 800-177 Rev. 1 Document History: 02/20/07: SP 800-45 Version 2 (Final) Topics Technologies email Applications communications & wireless Laws and Regulations Federal Information Security Modernization Act HEADQUARTERS 100 Bureau Drive Gaithersburg, MD 20899 X (link is external) facebook (link is external) linkedin (link is external) instagram (link is external) youtube (link is external) rss govdelivery (link is external) Want updates about CSRC and our publications? Subscribe Contact Us | Our Other Offices Send inquiries to [email protected] Site Privacy Accessibility Privacy Program Copyrights Vulnerability Disclosure No Fear Act Policy FOIA Environmental Policy Scientific Integrity Information Quality Standards Commerce.gov Science.gov USA.gov Vote.gov