Thanks for the recommendation. It seems to support a whitelist. From sample config\.toml:

```

[authorization]

# Pubkey addresses in this array are whitelisted for event publishing.

# Only valid events by these authors will be accepted, if the variable

# is set.

#pubkey_whitelist = [

# "35d26e4690cbe1a898af61cc3515661eb5fa763b57bd0b42e45099c8b32fd50f",

# "887645fef0ce0c3c1218d2f5d8e6132a19304cdc57cd20281d082f38cfea0072",

#]

# Enable NIP-42 authentication

#nip42_auth = false

# Send DMs (kind 4 and 44) and gift wraps (kind 1059) only to their authenticated recipients

#nip42_dms = false

```