1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
= Local SMTP Delivery =
By employing local SMTP, the burden of routing messages to suitable storage
becomes a configuration problem within the mail system itself.
{{{#!graphviz
//format=svg
//transform=notugly
digraph local_smtp {
node [shape=box,fontsize="13.0",fontname="Helvetica",tooltip="Local SMTP delivery"];
edge [tooltip="Local SMTP delivery"];
rankdir=LR;
mail [label="Incoming mail",shape=folder,style=filled,fillcolor=cyan];
subgraph {
rank=same;
personrouter [label="Person router"];
localrouter [label="Local router"];
recipients [label="Recipient database",shape=folder];
}
subgraph {
rank=same;
personhandler [label="Person handler",style=filled,fillcolor=gold];
localtransport [label="Local transport"];
}
mailbox [label="Mailboxes\n(Cyrus, Dovecot, ...)",tooltip="Mailboxes"];
mail -> personrouter -> personhandler;
recipients -> personrouter;
recipients -> localrouter;
personhandler -> localrouter -> localtransport -> mailbox;
}
}}}
Here, imip-agent connects to the mail transport agent (MTA) and sends a
message to an explicitly-indicated local user. For example:
{{{
local+vincent.vole@example.com
}}}
== Local System Users ==
With such a local user indicated, the message is then routed to a mail
delivery mechanism, perhaps by converting the local address to a local
system user identity (a user with an account on the system running the
software). For example:
{{{
vole
}}}
The local delivery mechanism would then deposit the message in the user's
mailbox. MTAs typically provide such routing for local system users by
default.
== Mailbox/Virtual Users ==
Alternatively, with a local user having been indicated, a message would be
routed for delivery by a mail storage solution which would accept the message
for the indicated user and deliver it to that user's mailbox. For example:
{{{
vincent.vole
}}}
Where such routing is performed to mailbox providers employing LMTP,
some additional configuration effort may be required. See the
[[../../MailboxIntegration|mailbox integration guide]] for more details.
Some of the routing for explicitly-indicated local users is dependent on the
identification of users and is described in the
[[../../MailIntegration/LDAP|LDAP]] and [[../../MailIntegration/Simple|simple]]
integration guides.
|
