The configuration options for HKP Server options
com.openexchange.guard.dns.publicKeyWhitelist
PGP lookup server white-list. The PGP public key server normally only shares keys that have already been created unless the the recipient and sender are local. This prevents DOS attacks with multiple PGP Public key searches for users that don't have keys generated yet. If, however, you have a trusted sender / PGP lookup, you can add the IP address here. PGP Public key requests from this key range will result in keys generated for the recipients as long as they have an AppSuite account. Comma delim CDIR notation or distinct IP. eg "= 10.0.100.0/24, 192.168.10.3"
Default: [no default]
Configcascade: false
Reloadable: false
As of version: 2.4.0
Package: open-xchange-guard