{"id":551,"date":"2013-04-04T07:24:46","date_gmt":"2013-04-04T12:24:46","guid":{"rendered":"http:\/\/www.exchangedefender.com\/blog\/2013\/04\/we-hear-you-part-2\/"},"modified":"2013-04-04T07:24:46","modified_gmt":"2013-04-04T12:24:46","slug":"we-hear-you-part-2","status":"publish","type":"post","link":"https:\/\/www.exchangedefender.com\/blog\/2013\/04\/we-hear-you-part-2\/","title":{"rendered":"We Hear You (Part 2)"},"content":{"rendered":"<p><a href=\"http:\/\/www.exchangedefender.com\/blog\/media\/85be587f212f_7399\/mega.png\"><img loading=\"lazy\" decoding=\"async\" title=\"mega\" style=\"border-top: 0px; border-right: 0px; background-image: none; border-bottom: 0px; float: right; padding-top: 0px; padding-left: 0px; border-left: 0px; display: inline; padding-right: 0px\" border=\"0\" alt=\"mega\" align=\"right\" src=\"http:\/\/www.exchangedefender.com\/blog\/media\/85be587f212f_7399\/mega_thumb.png\" width=\"240\" height=\"182\"><\/a>To continue from my blog post from last week, another pain point has been the inability of a thread to stay whitelisted. If you&#8217;ve brought this issue to us in the past you&#8217;re familiar with the explanation. The way our technology works is we insert a hashed message thread ID into all outbound messages, and if we find a match upon return it passes whitelisted. This worked well for a long time. Against technology is our best friend and our worst enemy. The increased adoption of &#8220;privacy&#8221; appliances and application&#8221; and Exchange header size limits basically made this solution inconsistent.  <\/p>\n<p>Exchange has a header size limit that can be adjusted, this setting basically starts stripping non-essential (non exchange header inserts) items, so what we found is after a few replies to a thread, our keys would get pushed out. As far as privacy appliances go, they basically clean headers every time so those would fail a lot faster and quickly.  <\/p>\n<p>We had to pull out the big guns and pull Vlad out of code retirement for this one. The new whitelisting engine works similar to a standard address based whitelist that doesn\u2019t relay on an element we can\u2019t control (headers). We&#8217;re still working on it but the bulk of it is live and you really should see a decrease in complaints from there as well.  <\/p>\n<p>Next week, we&#8217;ll look at spam engine rewrites that will knock your socks off! Well unless you&#8217;re the guy that thinks getting 2 pieces of SPAM that you signed up for or whitelisted in day means getting SLAMMED!  <\/p>\n<p>Carlos Lascano<br \/>VP Support Services, ExchangeDefender<br \/><a href=\"mailto:carlos@ownwebnow.com\">carlos@ownwebnow.com<\/a><br \/>(877) 546-0316 x737 <\/p>\n","protected":false},"excerpt":{"rendered":"<p> [&hellip;]<\/p>\n","protected":false},"author":40,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-551","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/posts\/551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/users\/40"}],"replies":[{"embeddable":true,"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/comments?post=551"}],"version-history":[{"count":0,"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/posts\/551\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/media?parent=551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/categories?post=551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.exchangedefender.com\/blog\/wp-json\/wp\/v2\/tags?post=551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}