View Source: LMTPNotes - Waikato Linux Users Group

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!! [LMTP] in /etc/services

[Debian] doesn't have it by default, so add this to the bottom of /etc/services:
<pre>
lmtp            2003/tcp                        # Cyrus LMTP
</pre>

!! Running [Cyrus] LMTPd on a TCP port (for Exim)

[Exim] requires a remote transport to do a callback, so you need to connect to a port, not a socket.

Your transport should look like:
<pre>
cyrus_lmtp:
  driver = smtp
  protocol = lmtp
  hosts = your.host.name
  allow_localhost
</pre>


In /etc/cyrus.conf, uncomment the lmtp line, and change the command line from <tt>lmtpd</tt> to <tt>lmtpd -a</tt>.  Copy that line, and bind it to your.host.name as well.

__WARNING:__ this means anyone who can connect to your machine on 2003/tcp can deliver it mail. Firewall it.

Test with <tt>exim4 -bhc ip.ad.re.ss</tt>.

You cannot put <tt>hosts = localhost</tt>, else you will get:

<verbatim>
>>> accept: condition test deferred
451 Could not complete recipient verify callout
LOG: H=(fosdf) [202.49.46.2] F=<foosg@dsgsg> temporarily rejected RCPT sdgg@hs.net.nz: Could not complete recipient verify callout
</verbatim>

See [Cyrus IMAP at the Exim wiki|http://www.exim.org/eximwiki/CyrusImap].

!! Sample [LMTP] session

Note that you can't put spaces after MAIL FROM:, and you need <>s:

<verbatim>
user@vienne:/# telnet localhost lmtp
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 vienne LMTP Cyrus v2.2.12-Debian-2.2.12-4ubuntu1 ready
LHLO foo
250-vienne
250-8BITMIME
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-SIZE
250-AUTH EXTERNAL
250 IGNOREQUOTA
MAIL FROM:<from>
250 2.1.0 ok
RCPT TO:<to>
550-Mailbox unknown.  Either there is no mailbox associated with this
550-name or you do not have authorization to see it.
550 5.1.1 User unknown
QUIT
221 2.0.0 bye
</verbatim>

!! Troubleshooting

If you see:

<verbatim>
RCPT TO:<UserWithCaps@some.domain.com>
550-Mailbox unknown.  Either there is no mailbox associated with this
550-name or you do not have authorization to see it.
550 5.1.1 User unknown
</verbatim>

but userwithcaps@some.domain.com works fine, you need to set

<verbatim>
lmtp_downcase_rcpt: true
</verbatim>

in your imapd.conf and restart cyrus.  That is, assuming you don't want case sensitivity on your user mailboxes (and who would?).

See also:

* CyrusNotes

----
CategoryMailNotes
3 pages link to LMTPNotes:
Last edited on Friday, October 6, 2006 3:59:15 pm by GreigMcGill
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