pop3proxyd in cyrus-imap 2.1.12

[Wolfgang Hottgenroth]

Hi,



is there a problem with proxying POP3 connection from a frontend to a
backend in v2.1.12?

I've a test setup with two frontends, two backends and a mupdate
master.
While proxying of IMAP connection works fine and while I can connect
to a backend using POP3 without problems any attempt to connect to a
frontend using POP3 ends up with this:

whottgen at ddev2:/prod/cimap2/current/bin$ telnet ddev1.eng.emea.uu.net 110
Trying 213.68.123.72...
Connected to ddev1.eng.emea.uu.net (213.68.123.72).
Escape character is '^]'.
+OK ddev1.eng.emea.uu.net Cyrus POP3 Murder v2.1.10 server ready <3130216488.1045746678 at ddev1.eng.emea.uu.net>
user testuser2
+OK Name is a valid mailbox
pass test123
-ERR Authentication to backend server failed
Connection closed by foreign host.
whottgen at ddev2:/prod/cimap2/current/bin$

In auth.log I always get such a line:
Feb 20 13:11:28 ddev1.eng.emea.uu.net pop3d[3663]: No worthy mechs found



The imapd.conf on the frontend is this:
configdirectory: /prod/cimap2/var/imap
partition-default: /prod/cimap2/var/spool
admins: cyradm
proxy_authname: proxy-ddev1
ddev4_password: xxx
ddev5_password: xxx
mupdate_username: frontend-mupdate-ddev1
mupdate_authname: frontend-mupdate-ddev1
mupdate_password: xxx
mupdate_server: ddev2.eng.emea.uu.net
sasl_pwcheck_method: saslauthd
sasl_sasldb_path: /prod/cimap2/var/sasldb

The imapd.conf on the backend is this:
configdirectory: /prod/cimap2/var/imap
partition-default: /prod/cimap2/var/spool
admins: backend-ddev5 cyradm
proxy_authname: backend-ddev4
ddev4_password: xxx
ddev5_password: xxx
mupdate_username: backend-mupdate-ddev4
mupdate_authname: backend-mupdate-ddev4
mupdate_password: xxx
mupdate_server: ddev2.eng.emea.uu.net
proxyservers: proxy-ddev1 proxy-ddev3
sasl_pwcheck_method: saslauthd
sasl_sasldb_path: /prod/cimap2/var/sasldb

If you're wondering why there is a proxy_authname in the imapd.conf of
the backend: I found that backend-to-backend moving of mailboxes seems
to require this. Is this intentionally?

Any hints?



Thanks,
Wolfgang