Re: user-whitelisting
quote:You don't even need a domain, just use plus-form addressing. /quote
unfortunately the plus-alias method used by @gmail.com addresses is also known to spammers (d'oh!) and they routinely discard +anything from gmail email addresses that they harvest.
this is why a wildcard mailbox is much more useful, because you can make it look like a regular email address without the need of such plus-aliasing tricks.