Most likely that someone posted a link to a resource in your domain, and your DNS appears to be an authoritative for that zone. Sounds quite realistic. There on facebook might be some kind of parser trying to retreive a preview for the link or something similar...
Anyway, have a look at the DNS server's logs - what exactly do they whant from you? =) .. or Zuckerberg must become bored to death =) 17.05.2012 15:50, Siju George P=P0P?P8QP0P;: > Why should facebook servers access my firewall? -- Best regards, Pavel Shvagirev skype: pavel.shvagirev

