In the HTTP log this is recorded as follows:
2008:11:25-13:11:48 (none) httpproxy[3739]: Integrated HTTP-Proxy (c) 2007-2008 Astaro AG
2008:11:25-13:11:48 (none) httpproxy[3739]: [ (nil)] main (httpproxy.c:172) reading configuration
2008:11:25-13:11:50 (none) httpproxy[3739]: [ (nil)] parse_address (util.c:490) getaddrinfo: passthrough.fw-notify.net: Name or service not known
2008:11:25-13:11:50 (none) httpproxy[3739]: [ (nil)] confd_config_filter (confd-client.c:1684) failed to resolve passthrough.fw-notify.net
2008:11:25-13:11:50 (none) httpproxy[3739]: [ (nil)] main (httpproxy.c:177) error reading config, exiting
2008:11:25-13:12:10 (none) httpproxy[3900]: Integrated HTTP-Proxy (c) 2007-2008 Astaro AG
2008:11:25-13:12:11 (none) httpproxy[3900]: [ (nil)] main (httpproxy.c:172) reading configuration
2008:11:25-13:12:20 (none) httpproxy[3900]: [ (nil)] parse_address (util.c:490) getaddrinfo: passthrough.fw-notify.net: Name or service not known
2008:11:25-13:12:20 (none) httpproxy[3900]: [ (nil)] confd_config_filter (confd-client.c:1684) failed to resolve passthrough.fw-notify.net
2008:11:25-13:12:20 (none) httpproxy[3900]: [ (nil)] main (httpproxy.c:177) error reading config, exiting
After this, the next starting attempt succeeds.
This leads to an admin notification "[INFO-141] Http proxy not running - restarted" after each boot.
Regards,
Bastian