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Added reference to Allman to the text; added missing reference to ML.
author markus schnalke <meillo@marmaro.de>
date Thu, 21 Jun 2012 08:58:56 +0200
parents 2818ca27d24c
children
comparison
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104:2818ca27d24c 105:9ff356d84c57
59 agents, mmh is a MUA only. 59 agents, mmh is a MUA only.
60 This general difference initiated the development of mmh. 60 This general difference initiated the development of mmh.
61 Removing the mail transfer facilities had been the first work task 61 Removing the mail transfer facilities had been the first work task
62 in the mmh project. 62 in the mmh project.
63 .P 63 .P
64 The Mail Submission Agent (MSA) is called 64 Focusing on one mail agent role only is motivated by Eric Allman's
65 \fIMessage Transfer Service\fP (MTS) in nmh. 65 experience with Sendmail.
66 The facility established network connections and spoke SMTP to submit 66 He identified limiting Sendmail the MTA task had be one reason for
67 its success:
68 .[ [
69 costales sendmail
70 .], p. xviii]
71 .QS
72 Second, I limited myself to the routing function \(en
73 I wouldn't write user agents or delivery backends.
74 This was a departure of the dominant through of the time,
75 in which routing logic, local delivery, and often the network code
76 were incorporated directly into the user agents.
77 .QE
78 .P
79 In mmh, the Mail Submission Agent (MSA) is called
80 \fIMessage Transfer Service\fP (MTS).
81 This facility, implemented by the
82 .Pn post
83 command, established network connections and spoke SMTP to submit
67 messages for relay to the outside world. 84 messages for relay to the outside world.
68 This part was implemented by the 85 The changes in email demanded changes in this part of nmh too.
69 .Pn post
70 command.
71 The changes in email in the last years
72 demanded changes in this part of nmh too.
73 Encryption and authentication for network connections 86 Encryption and authentication for network connections
74 needed to be supported, hence TLS and SASL were introduced into nmh. 87 needed to be supported, hence TLS and SASL were introduced into nmh.
75 This added complexity to nmh without improving it in its core functions. 88 This added complexity to nmh without improving it in its core functions.
76 Also, keeping up with recent developments in the field of 89 Also, keeping up with recent developments in the field of
77 mail transfer requires development power and specialists. 90 mail transfer requires development power and specialists.