> 10k requests per 30-day period is about 333 queries/day. Or less than 14 > queries per hour. > Not very much at all (and certainly at least order of magnitude less than > your stated traffic). > No amount of local DNS caching is going to fix limits *that low*.
Just a reminder that there is no such limitation on the IADB, which is essentially the same type of 'good sender' certification as that aspect of Validity. We don't even *have* a paid version for receivers - it's free, and it always has been, and it always will be, because we consider our first responsibility as being to the ISPs and spam filters who rely on us. We also were the originator of the 'data points' model of DNS lists, where each octet in the zone represents a discrete aspect of the sender's sending policies, for example: 127.3.100.200 The only email which comes from this IP address is one-to-one or transactional email. No bulk email is sent from this IP address 127.3.100.100 The only email which comes from this IP address is mailing list email, and that mailing list email is entirely confirmed (double) opt-in We did this *specifically* so that SA could take full advantage if the information we have (in fact I worked with Craig Hughes on developing this model - and I made the considered choice to *not* try to protect it through patent or copyright, so we knew that others would copy it and that was ok with us, as anything that makes it easier for receivers to identify good email so that they can focus their resources to the bad email, makes the email ecosystem better). So, again, queries to the IADB are unlimited and always free, have been for the 20+ years we've been in operation (we founded the *exact* came month that Scott Weiss started Bonded Sender). All we ask is that if you are going to do a ton of querying, that you transfer the zone to a local copy instead of querying directly. Anne -- Anne P. Mitchell, Esq. Email Law & Policy Attorney Legislative Advisor Author: Section 6 of the CAN-SPAM Act of 2003 (the vendor liability for affiliates section) CEO Institute for Social Internet Public Policy Creator of the term 'deliverability'; Co-Founder of the deliverability industry Board of Directors, Denver Internet Exchange Dean Emeritus, Cyberlaw & Cybersecurity, Lincoln Law School Prof. Emeritus, Lincoln Law School Chair Emeritus, Asilomar Microcomputer Workshop Counsel Emeritus, eMail Abuse Prevention System (MAPS)
