* Automatic Dockerfile update by release process

Dockerfile

@@ -2,7 +2,7 @@ FROM        debian:jessie
 MAINTAINER  Freelock john@freelock.com
 
 # Build time variables
-ENV LSMB_VERSION 1.5.14
+ENV LSMB_VERSION 1.5.16
 
 
 # Install Perl, Tex, Starman, psql client, and all dependencies

README.md

@@ -118,14 +118,14 @@ without needing to enter the name of that database on the login.pl login screen.
 
 ## Mail configuration
 
-* `SSMTP_ROOT`
-* `SSMTP_MAILHUB`
-* `SSMTP_HOSTNAME`
-* `SSMTP_USE_STARTTLS`
-* `SSMTP_AUTH_USER`
-* `SSMTP_AUTH_PASS`
-* `SSMTP_METHOD`
-* `SSMTP_FROMLINE_OVERRIDE`
+* `SSMTP_ROOT` (config: `Root`)
+* `SSMTP_MAILHUB` (config: `Mailhub`)
+* `SSMTP_HOSTNAME` (config: `Hostname`)
+* `SSMTP_USE_STARTTLS` (config: `UseSTARTTLS`)
+* `SSMTP_AUTH_USER` (config: `AuthUser`)
+* `SSMTP_AUTH_PASS` (config: `AuthPass`)
+* `SSMTP_AUTH_METHOD` (config: `AuthMethod`)
+* `SSMTP_FROMLINE_OVERRIDE` (config: `FromLineOverride`)
 
 These variables are used to set outgoing SMTP defaults.
 
@@ -137,6 +137,9 @@ already configured to relay mail, this should relay successfully with only
 the root and hostname set.
 
 Use the other environment variables to relay mail through a different host.
+Use the [ssmtp.conf man
+page](https://www.systutorials.com/docs/linux/man/5-ssmtp.conf/) to look up
+the meaning and function of each of the mail configuration keys.
 
 # Troubleshooting/Developing
 
@@ -150,7 +153,7 @@ and the startup & config script is /usr/bin/start.sh.
 
 If you have any problems with or questions about this image or LedgerSMB, please contact us on the [mailing list](http://ledgersmb.org/topic/support/mailing-lists-rss-and-nntp-feeds) or through a [GitHub issue](https://github.com/ledgersmb/ledgersmb-docker/issues).
 
-You can also reach some of the official LedgerSMB maintainers via the `#ledgersmb` IRC channel on [Freenode](https://freenode.net), or on the bridged [Matrix](https://matrix.org) room in [#ledgersmb:matrix.org](https://matrix.to/#/#ledgersmb:matrix.org). The [Vector.im](https://vector.im/beta/#/room/#ledgersmb:matrix.org) Matrix client is highly recommended.
+You can also reach some of the official LedgerSMB maintainers via the `#ledgersmb` IRC channel on [Freenode](https://freenode.net), or on the bridged [Matrix](https://matrix.org) room in [#ledgersmb:matrix.org](https://matrix.to/#/#ledgersmb:matrix.org). The [Riot.im](https://riot.im/app/#/room/#ledgersmb:matrix.org) Matrix client is highly recommended.
 
 
 ## Contributing