Installation

The bm-xmpp package allows you to install the BlueMind XMPP server comprehensively.

Integration with BlueMind services

The "bm-xmpp" package adds the functionalities below to BlueMind:

• integrated authentication with bm-core
• XMPP server for all domains monitored by BlueMind
• support of vCard contact information and avatars from the data in the BlueMind address book 
• default user email addresses match their jabber ID

Service inter-dependencies

"bm-xmpp" depends on the following BlueMind services:

• bm-locator to locate BlueMind services
• bm-mq to keep the list of domains monitored by BlueMind up to date
• bm-core for vCard authentication and generation
• bm-elasticsearch for archiving and searching conversations

Enabling the instant messaging service 

To enable the instant messaging service, connect to BlueMind as admin0 and:

• go to System Management > Application's servers
• select the server > "Server roles"
• tick "Instant messaging indexing server"
• click "Save"

Next go back to the admin console home page and:

• go to System Management > Supervised domains
• select the domain concerned
• in the "BM Server" tab: assign the XMPP server
• in the "Instant messaging" tab, define accesses
• click "Save"

Finally, for users to be able to access the instant messaging service, they must be given the appropriate role for the application:

• either via the user's management page > General tab
• or via the group roles management page > Roles tab

To find out more about enabling this role, go to the dedicated page: Roles: Access and Administration Rights

Changing SSL certificates

SSL certificates are generated automatically by bm-xmpp when a new domain is used. As self-signed certificates, they must be replaced by valid certificates.

To replace a domain's certificate, simply replace the appropriate files in  /usr/share/bm-xmpp/certs/.

Connecting the XMPP server to the internet

By allowing the XMPP server to connect to the internet, the server is able to connect to other XMPP servers or to allow external users to connect to BlueMind's XMPP server. BlueMind users are then able to add non-BlueMind contacts to their instant messaging's contact list (displayed in the roaster). 

Finding an externally-accessible DNS address

For example, if an XMPP server's DNS is "xmpp.mydomain.com", this DNS name must be resolved externally, from the internet, and not only internally.

Communication ports

The ports below must be accessible externally on the server "xmpp.mydomain.com" (see also Services):

• 5222 from the client to the server for client-server communications
• 5223 from the client to the server for client-server SSL communications
• 5269, used for server-to-server communications 

If "bm-xmpp" is not installed on the server whose DNS name is "xmpp.mydomain.com" (e.g. in the case of a proxy), these ports' data flows must be redirected to the server hosting "bm-xmpp".

Adding DNS SRV records

The DNS configuration of the domain "mydomain.com" must be edited to allow the external network to recognize "xmpp.mydomain.com" as the XMPP server for the domain "mydomain.com".

The following SRV records must be added:

_xmpp-client._tcp.DOMAIN.

_xmpp-client._tcp.mydomain.com.  86400  IN  SRV  5 0 5222  xmpp.mydomain.com

_xmpp-server._tcp.DOMAIN.

_xmpp-server._tcp.mydomain.com.  86400  IN  SRV  5 0 5269  xmpp.mydomain.com

Checking DNS records

You can use the command-line tool "dig" to check DNS records. For example, to find out which server to use for the domain "gmail.com":

root@prec:~# dig SRV _xmpp-client._tcp.gmail.com

; <<>> DiG 9.8.1-P1 <<>> SRV _xmpp-client._tcp.gmail.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56538
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 10

;; QUESTION SECTION:
;_xmpp-client._tcp.gmail.com.	IN	SRV

;; ANSWER SECTION:
_xmpp-client._tcp.gmail.com. 5	IN	SRV	5 0 5222 xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 5	IN	SRV	20 0 5222 alt1.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 5	IN	SRV	20 0 5222 alt2.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 5	IN	SRV	20 0 5222 alt3.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 5	IN	SRV	20 0 5222 alt4.xmpp.l.google.com.

;; ADDITIONAL SECTION:
xmpp.l.google.com.	5	IN	A	74.125.132.125
xmpp.l.google.com.	5	IN	AAAA	2a00:1450:400c:c06::7d
alt1.xmpp.l.google.com.	5	IN	A	173.194.70.125
alt1.xmpp.l.google.com.	5	IN	AAAA	2a00:1450:4001:c02::7d
alt2.xmpp.l.google.com.	5	IN	A	173.194.69.125
alt2.xmpp.l.google.com.	5	IN	AAAA	2a00:1450:4008:c01::7d
alt3.xmpp.l.google.com.	5	IN	A	74.125.135.125
alt3.xmpp.l.google.com.	5	IN	AAAA	2404:6800:4001:c01::7d
alt4.xmpp.l.google.com.	5	IN	A	74.125.128.125
alt4.xmpp.l.google.com.	5	IN	AAAA	2404:6800:4005:c00::7d

;; Query time: 572 msec
;; SERVER: 172.16.45.2#53(172.16.45.2)
;; WHEN: Tue Sep  3 01:28:26 2013
;; MSG SIZE  rcvd: 470