Rudi Ahlers wrote: > Hi, > > Does anyone know how I can monitor our server's for blacklisting? We > run a large amount of shared hosting & reseller hosting servers and > from time to time one of the IP's will get blacklisted. I'm looking > for a way to be notified if any of our IP's get blacklisted. Is this > possible? > You could manually check your IP address(es) here: http://www.dnsbl.info/ Alternatively, just read your logs (or write a simple script to parse them for you). You'll receive a 5xx rejection and usually a reason/URL from the main blacklists whenever you are blocked. If you're using postfix as your MTA, check out pflogsumm.