FTP does not start up at boot

My proftpd service does not start when i boot my machine up (red dot). The FTP service plugin says it is enabled.
When i disable and re-enable the plugin FTP comes up (doing "service proftpd start" on CLI also works).
I could not find anything suspicious in the proftpd.log.
How can i find out what prevents FTP from starting at boot?

Mon Oct 12 18:22:14 2015: Starting ftp server: proftpddebNAS proftpd[3054]: mod_tls_memcache/0.1: notice: unable to register 'memcache' SSL session cache: M$
Mon Oct 12 18:22:14 2015: debNAS proftpd[3054]: Fatal: MasqueradeAddress: unable to resolve "xxx.xxx.xxx" on line 59 of '/etc/proftpd/proftpd.conf'
Mon Oct 12 18:22:14 2015:  failed!

The masquerade line seems to be the issue. This is the address of my dyndns host (i x'ed it out), which works perfectly fine when the NAS is booted up. Does it try to resolve the address before having network (respectively contact to the DNS server)?

Here is an extract of /etc/rc2.d:

lrwxrwxrwx 1 root root  32 Sep 25 16:03 S02openmediavault-engined -> ../init.d/openmediavault-engined
lrwxrwxrwx 1 root root  17 Sep 25 16:02 S02proftpd -> ../init.d/proftpd
lrwxrwxrwx 1 root root  23 Sep 25 15:58 S02smartmontools -> ../init.d/smartmontools
lrwxrwxrwx 1 root root  27 Sep 26 12:39 S02speech-dispatcher -> ../init.d/speech-dispatcher
lrwxrwxrwx 1 root root  16 Okt  2 13:53 S02squid3 -> ../init.d/squid3
lrwxrwxrwx 1 root root  13 Okt  5 14:04 S02ssh -> ../init.d/ssh
lrwxrwxrwx 1 root root  17 Sep 25 15:58 S02winbind -> ../init.d/winbind
lrwxrwxrwx 1 root root  22 Sep 25 16:02 S03avahi-daemon -> ../init.d/avahi-daemon
lrwxrwxrwx 1 root root  19 Sep 26 12:38 S03bluetooth -> ../init.d/bluetooth
lrwxrwxrwx 1 root root  22 Sep 25 16:02 S03cpufrequtils -> ../init.d/cpufrequtils
lrwxrwxrwx 1 root root  15 Okt  5 19:35 S03mysql -> ../init.d/mysql
lrwxrwxrwx 1 root root  25 Sep 26 12:38 S03network-manager -> ../init.d/network-manager

I guess i need to move proftpd to after the network manager?
Should i do this manually or will that confuse OMV in any way?

Zitat

No, i wouldn't think of that, the lsb tags indicate that $network is required to start. Network mounts as nfs occur at runlevel S network should already be available at level 2345. Might me a problem with dns though and that might involve the network manager. Your connection uses static or dynamic ip for WAN?

You were right, it was indeed a DNS issue. I did not configure my router as static DNS. OMV set it up as it's DNS when getting the IP from DHCP.
After staticaly putting it's IP as the DNS to ask, it works fine now.

Thanks!!