3 | | We are running two servers (rustin in Telehouse and cleveland in XO) that are configured to run multiple instances of postfix. |
4 | | |
5 | | These servers relay mail on behalf of our servers that send bulk mail: |
6 | | |
7 | | * leslie.mayfirst.org (lists.mayfirst.org) |
8 | | * assata.mayfirst.org (lists.people-link.net) |
9 | | * morales.mayfirst.org (lists.portside.org) |
10 | | * mx3.mayfirst.org (listas.laneta.apc.org) |
11 | | |
12 | | == The relays == |
13 | | |
14 | | Currently, there is only one relay setup on rustin. The setup is handled in puppet by the following lines in rustin's pp file: |
15 | | |
16 | | {{{ |
17 | | class { "m_postfix::multi": |
18 | | smtp_bind_ip => "216.66.22.61", |
19 | | multi_instance_directories => [ "postfix-a" ] |
20 | | } |
21 | | m_postfix::multi_relay_instance { "postfix-a": |
22 | | smtp_bind_ip => "216.66.23.37", |
23 | | mynetworks => $::mfpl_relaying_ips |
24 | | } |
25 | | }}} |
26 | | |
27 | | The first stanza should be included once for each host. |
28 | | |
29 | | The second stanza should be repeated for each relay instance on that host. |
30 | | |
31 | | When adding a new instance: |
32 | | |
33 | | * Create a DNS Host record that associates the IP address to the host |
34 | | (e.g. rustin.mayfirst.org <=> 216.66.23.37). |
35 | | * Create an A record set to a.rustin.mayfirst.org (or b or c, etc corresponding |
36 | | to how you have named the instance). |
37 | | |
38 | | == Using the relay == |
39 | | |
40 | | To use a relay, add an entry to /etc/postfix/transport.relay, e.g.: |
41 | | |
42 | | {{{ |
43 | | hotmail.com smtp:a.rustin.mayfirst.org |
44 | | }}} |
45 | | |
46 | | The line above says: relay all mail destined for hotmail.com through a.rustin.mayfirst.org. |
47 | | |
48 | | You will then need to run the commands: |
49 | | {{{ |
50 | | # postmap transport.relay |
51 | | # postfix flush |
52 | | }}} |
53 | | |
54 | | These commands say respectively, convert the transport.relay into transport.relay.db (so postfix can use it) and flush the mailq. |
55 | | |
56 | | At the moment this must be done by hand on each individual server. Once fully tested, it will be handled by puppet. |
| 3 | This documentation is superseded by [wiki:bulk-mail-relay]. |