A terminating comment has been added to all SURBL zone files. It has the form:
; End of file: $timestamp
where $timestamp is Unix epoch seconds and matches the zone file serial number. This can be used to automatically detect truncated files. If the terminating comment is not present, the file is truncated.
Notes:
0. This would only affect those using rsynced zone files, and for them it should have generally no impact as long as comments are correctly detected. The semicolon comment character is standard for BIND and rbldnsd, but may not be for other applications. This change would not affect users of DNS queries via the SURBL public nameservers in any way.
1. The syntax is minorly different from some other blacklist zonefiles with similar comments in that there is a space between the comment character and the text.
2. The only zone that should be used in any production applications is multi.surbl.org. The others are obsolete since they're all included in multi, and they may go away eventually.
3. SURBL still needs help with public DNS. Please see: http://www.surbl.org/public-dns.html and contact us at rsync at our domain if you can help.