31:
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In 1996, approximately 80% of the publicly reachable mail-servers on the
Internet ran Sendmail. More recent surveys have suggested a decline, with 3.64% of mail servers in March 2021 detected as running Sendmail in a study performed by E-Soft, Inc. A previous survey (December 2007 or earlier)
380:
Sendmail originated in the early days of the
Internet, an era when considerations of security did not play a primary role in the development of network software. Early versions of Sendmail suffered from a number of security vulnerabilities that have been corrected over the years.
324:
macro language which hides much of the configuration complexity. The configuration defines the site-local mail delivery options and their access parameters, the mechanism of forwarding mail to remote sites, as well as many application tuning parameters.
319:
Allman designed
Sendmail to incorporate great flexibility, but it can be daunting to configure for novices. Standard configuration packages delivered with the source code distribution require the use of the
95:
802:
700:
780:
603:
As of sendmail release 8.12.0 the default implementation of sendmail runs as the Unix user smmsp — the sendmail message submission program.
998:
392:, incorporate a number of security improvements and optional features that can be configured to improve security and help prevent abuse.
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in order to avoid exposure to security issues. As of 2009, current versions of
Sendmail, like other modern
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routing facility that supports many kinds of mail-transfer and delivery methods, including the
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316:
reported 24% of mail servers running
Sendmail according to a study performed by Mail Radar.
1277:
1193:
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612:
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385:
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8:
1226:
1067:
845:— This is the Sendmail "bible" containing 1308 pages about Sendmail. It is also known as
622:
192:
1107:
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852:
413:
849:, because of the picture on its cover. The 1st Edition was published in November 1993.
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199:
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120:
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549:
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501:
494:"CA-1997-05 MIME Conversion Buffer Overflow in Sendmail Versions 8.8.3 and 8.8.4"
477:
453:
429:
853:
Bryan
Costales; George Jansen; Claus Assmann; Gregory Shapiro (September 2004).
846:
889:
180:
20:
1184:
595:
dedicated an entire chapter to perceived problems and weaknesses of sendmail.
1356:
1241:
912:
867:, this book documents the improvements in V8.13 in parallel with its release.
278:
356:- external mail filtering programs that can participate in each step of the
1057:
686:
352:. Additionally, Sendmail v8.12 as of September 2001 introduced support for
238:
94:
1150:
1087:
667:
642:
305:
304:. He wrote Sendmail as a derivative of delivermail in the early 1980s at
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107:
810:
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102:
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4.1c in 1983, the first BSD version that included TCP/IP protocols.
19:
This article is about the mail transfer agent. For the company, see
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349:
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274:
309:
301:
400:
Sendmail vulnerabilities in CERT advisories and alerts:
987:, SMTP Fast Exploding External Deliverer for Sendmail.
748:
Allman, Eric; Assmann, Claus; Shapiro, Gregory Neil.
518:"CA-1996-25 Sendmail Group Permissions Vulnerability"
372:This announcement was released on 1 October 2013.
363:
932:"History of Sendmail: Interview with Eric Allman"
406:"TA06-081A Sendmail Race Condition Vulnerability"
384:Sendmail itself incorporated a certain amount of
1354:
883:
835:Bryan Costales with Eric Allman (October 2007).
747:
680:
542:"CA-1996-24 Sendmail Daemon Mode Vulnerability"
470:"CA-2003-07 Remote Buffer Overflow in Sendmail"
1019:
907:Paul Vixie; Frederick M Avolio (2002-01-09).
395:
750:"Sendmail Installation and Operations Guide"
942:
1026:
1012:
870:
707:. E-Soft Inc. 1 March 2021. Archived from
809:. The Sendmail Consortium. Archived from
781:"Proofpoint, Inc. Acquires Sendmail, Inc"
248:(SMTP) used for email transport over the
75:Learn how and when to remove this message
446:"CA-2003-12 Buffer Overflow in Sendmail"
422:"CA-2003-25 Buffer Overflow in Sendmail"
38:This article includes a list of general
929:
300:which shipped in 1979 with 4.0 and 4.1
1355:
1007:
566:"CA-1996-20 Sendmail Vulnerabilities"
328:Sendmail supports a variety of mail
24:
946:Sendmail Evolution: 8.10 and Beyond
277:communities. It has spread both as
13:
683:"Internet host SMTP server survey"
572:. 31 December 1996. Archived from
548:. 31 December 1996. Archived from
524:. 31 December 1996. Archived from
500:. 31 December 1997. Archived from
476:. 31 December 2003. Archived from
452:. 31 December 2003. Archived from
428:. 31 December 2003. Archived from
44:it lacks sufficient corresponding
14:
1394:
1033:
968:
943:Eric Allman; et al. (1999).
598:
155:8.18.1 / January 31, 2024
1183:
963:from the original on 2000-09-14.
93:
29:
1378:Email server software for Linux
884:Nick Christenson (2002-09-13).
787:October 1, 2013. Archived from
364:Acquisition by Proofpoint, Inc.
16:Open-source mail transfer agent
795:
773:
741:
723:
693:
681:D. J. Bernstein (1996-11-27).
674:
660:
368:Sendmail, Inc was acquired by
1:
1373:Free software programmed in C
1247:Mercury Mail Transport System
1232:Internet Information Services
956:Annual Technical Conference.
828:
271:free and open source software
246:Simple Mail Transfer Protocol
909:sendmail Theory and Practice
871:Craig Hunt (December 2003).
7:
1212:Eudora Internet Mail Server
992:Internet SMTP server survey
886:sendmail Performance Tuning
638:Internet messaging platform
606:
375:
288:
265:, Sendmail is a well-known
226:/open-source-email-solution
132:; 41 years ago
10:
1399:
1368:Free email server software
930:Lourier, Philippe (1999).
618:Comparison of mail servers
396:History of vulnerabilities
293:Allman wrote the original
18:
1327:
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1252:Microsoft Exchange Server
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803:"Sendmail release notes"
653:
1363:Message transfer agents
1217:Gordano Messaging Suite
999:A brief history of mail
859:O'Reilly and Associates
855:sendmail 8.13 Companion
841:O'Reilly and Associates
59:more precise citations.
1222:IBM/Lotus Notes/Domino
157:; 7 months ago
1237:Ipswitch IMail Server
990:Daniel J. Bernstein,
865:sendmail, 3rd Edition
837:sendmail, 4th Edition
237:is a general purpose
119:Sendmail Consortium,
1266:Related technologies
613:List of mail servers
592:UNIX-HATERS Handbook
386:privilege separation
283:proprietary software
255:A descendant of the
1227:IceWarp Mail Server
1068:Courier Mail Server
731:"Mail Radar survey"
623:Mail delivery agent
261:program written by
193:Mail transfer agent
89:
936:Dr. Dobb's Journal
701:"E-Soft MX survey"
330:transfer protocols
308:. It shipped with
103:Original author(s)
87:
1350:
1349:
1319:Unicode and email
1179:
1178:
1073:Cyrus IMAP server
899:978-0-321-11570-6
873:sendmail Cookbook
863:— A companion to
783:(Press release).
705:securityspace.com
232:
231:
85:
84:
77:
1390:
1307:Related articles
1257:Novell GroupWise
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980:Sendmail sources
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785:Proofpoint, Inc.
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755:. Archived from
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733:. Archived from
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685:. Archived from
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412:. Archived from
370:Proofpoint, Inc.
348:, QuickPage and
228:
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223:
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219:
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205:Sendmail License
176:Operating system
165:
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121:Proofpoint, Inc.
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55:this article by
46:inline citations
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997:Mike Brodbelt,
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668:"Release Notes"
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628:Mail user agent
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570:CERT Advisories
564:
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546:CERT Advisories
540:
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522:CERT Advisories
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498:CERT Advisories
492:
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474:CERT Advisories
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450:CERT Advisories
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426:CERT Advisories
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127:Initial release
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51:Please help to
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994:, October 2001
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975:Sendmail, Inc.
970:
969:External links
967:
966:
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927:
922:978-1555582296
921:
904:
898:
890:Addison-Wesley
881:
868:
850:
847:"The Bat Book"
830:
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794:
791:on 2021-10-24.
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737:on 2007-12-13.
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599:Implementation
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416:on 2006-04-08.
410:US-CERT Alerts
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360:conversation.
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181:Cross-platform
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913:Digital Press
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65:November 2019
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27:
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22:
1144:Discontinued
1117:
1058:Apache James
945:
935:
908:
885:
872:
864:
854:
836:
815:. Retrieved
811:the original
807:sendmail.org
806:
797:
789:the original
775:
764:. Retrieved
757:the original
743:
735:the original
725:
713:. Retrieved
709:the original
704:
695:
687:the original
676:
662:
602:
590:
588:
578:. Retrieved
574:the original
569:
554:. Retrieved
550:the original
545:
530:. Retrieved
526:the original
521:
506:. Retrieved
502:the original
497:
482:. Retrieved
478:the original
473:
458:. Retrieved
454:the original
449:
434:. Retrieved
430:the original
425:
414:the original
409:
399:
383:
379:
367:
332:, including
327:
318:
314:
292:
256:
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239:internetwork
234:
233:
115:Developer(s)
71:
62:
43:
1194:Proprietary
1151:Delivermail
1088:hMailServer
1043:Open source
643:Morris worm
306:UC Berkeley
298:delivermail
263:Eric Allman
258:delivermail
218:.proofpoint
108:Eric Allman
57:introducing
1357:Categories
1337:Comparison
1063:Citadel/UX
829:References
817:2009-08-30
766:2009-07-28
580:January 7,
556:January 7,
532:January 7,
508:January 7,
484:January 7,
460:January 7,
436:January 7,
162:2024-01-31
40:references
1283:Push-IMAP
1103:OpenSMTPD
224:/products
1332:Category
1118:Sendmail
985:SMTPfeed
958:Archived
877:O'Reilly
715:21 March
607:See also
376:Security
289:Overview
250:Internet
235:Sendmail
88:Sendmail
1166:UW IMAP
1161:qpopper
1130:Zentyal
1108:Postfix
1078:Dovecot
1051:Current
354:milters
346:HylaFAX
342:Mail-11
295:ARPANET
269:of the
267:project
211:Website
200:License
160: (
135: (
53:improve
1202:Axigen
1171:Zarafa
1135:Zimbra
1098:Kopano
954:USENIX
919:
896:
338:DECnet
42:, but
1314:Email
1123:MeTA1
1113:Qmail
1093:Kolab
961:(PDF)
950:(PDF)
760:(PDF)
753:(PDF)
654:Notes
648:MeTA1
633:msmtp
242:email
1342:List
1298:UUCP
1293:SMTP
1288:SMAP
1273:IMAP
1156:Hula
1083:Exim
917:ISBN
894:ISBN
717:2021
589:The
582:2005
558:2005
534:2005
510:2005
486:2005
462:2005
438:2005
390:MTAs
358:SMTP
350:UUCP
334:SMTP
281:and
275:Unix
273:and
220:.com
188:Type
137:1983
130:1983
1278:POP
340:'s
310:BSD
302:BSD
222:/us
216:www
1359::
952:.
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911:.
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888:.
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344:,
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322:M4
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63:(
49:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
