{"id":2738,"date":"2010-09-24T15:58:00","date_gmt":"2010-09-24T15:58:00","guid":{"rendered":"https:\/\/mailinglistservices.com\/?p=2738"},"modified":"2010-09-24T15:58:00","modified_gmt":"2010-09-24T15:58:00","slug":"tarpitting-and-other-sticky-email-issues","status":"publish","type":"post","link":"https:\/\/dundee.net\/index.php\/tarpitting-and-other-sticky-email-issues\/","title":{"rendered":"Tarpitting and other sticky email issues."},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2738\" class=\"elementor elementor-2738\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-64db4210 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"64db4210\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4f534061\" data-id=\"4f534061\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5e41266a elementor-widget elementor-widget-heading\" data-id=\"5e41266a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Tarpitting and other sticky email issues.<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8482d1f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8482d1f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7add521\" data-id=\"7add521\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f6f8825 elementor-widget elementor-widget-text-editor\" data-id=\"f6f8825\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This morning you mailed to 750,000 subscribers, a simple newsletter and you cannot understand why the delivery rate is beyond slow, in fact, it is crawling.\u00a0 Your list members are all opted-in, you\u2019re not black listed anywhere and this is a scheduled mailing, people are expecting it.\u00a0 What\u2019s going on? \u00a0You check with your list administrator who informs you your mail is being tarpitted. Huh? \u2013 With a little research and reading, you discover:<\/p><p><em>Tar Pitted or Tarpitting is closely related to the notion of the teergrube (German for tar pit): \u00a0a server that is intentionally configured to be sluggish as a common means of trapping address harvester programs.<\/em>\u00a0 Can that really be the reason for your delayed mailing?<\/p><p>What and whys:<\/p><ol><li>Tarpitting is the practice of purposely slowing down email transmissions from reaching the mail server, typically by delaying incoming connections for as long as possible.\u00a0 This practice is noted to have been developed as a defensive measure against a computer worm.<\/li><li>Tarpitting can be created by adding specific delays between a set numbers of messages.\u00a0 For example, the mail server can insert a 5-second delay between email messages after the first 50 messages are sent: which essentially can add days to your delivery rate (depending on how many list members you have).\u00a0 Additionally the mail server can create a delay if the release time is extended with each invalid email address submitted. \u00a0If your valid email is caught up in a tarpit, your mail will eventually be delivered because the connection is never broken, just slowed down<\/li><li>Tarpitting continues to be utilized because there is a belief that usual network abuses such bulk email spamming loses its effectiveness if delivery takes too long.<\/li><li>Tarpitting employed by a mail server is done with the intention of discouraging bulk spammers, by offering low response rates because the slowed connections.\u00a0 This in turn creates the inability to send volumes of messages quickly (and cheaply).<\/li><li>The practice of tarpitting normally does not affect the integrity of legitimate email senders because the actual delay time is inconsequential for the typical recipient lists. (Mail server administrators can also make exceptions for legitimate mail.) ]<\/li><\/ol><p>However, you\u2019re not a spammer and you\u2019ve been sending email newsletters for years!\u00a0 If you find yourself with an unusual slow mail delivery, check with your ESP.\u00a0 (Email Service Provider).\u00a0 An ESP can usually research and discover if your mail delay is related to a tarpitting issue.\u00a0 An ESP might tell you that bigger ISPs may tarpit mail on occasion for a variety of reasons, from internal issues to a perceived spammy subject line.\u00a0 We\u2019ve seen tarpitting occur without rhythm or reason other than the ISP decided that not enough people were clicking on the received mail, so therefore if <strong>might be spam<\/strong>.<\/p><p>If tarpitting becomes a concern, one option you may have is to get yourself whitelisted.\u00a0 In some cases when your mailings are clearly whitelisted, tarpitting will not have an adverse effect on your email. \u00a0However not all ISP\u2019s use or accept whitelisting which doesn\u2019t help you if your dealing with such an ISP.<\/p><p>To be whitelisted is a good thing, as a whitelisted email may escape the tarpit slow down. \u00a0However, as mentioned this is not available to do with all ISPs. \u00a0\u00a0Moreover, while being whitelisted is good, other classes may not be.\u00a0 There is mail that can be greylisted or blacklisted.\u00a0 Greylisting occurs when the sever rejects the connection causing the need for your email to be resent later. \u00a0Greylisting is based on the premise that spammers only want to connect to a mail server quickly, ideally on the first attempt with little hassle, while legitimate mailers will retry to connect to the mail server over longer periods.\u00a0 If you\u2019re sending from an unfamiliar IP address for example, you may be greylisted.<\/p><p>If you\u2019re blacklisted simply put you are considered a Spammer.\u00a0 Become blacklisted and you compromise your sender reputation and the IP address being used.\u00a0 There are volumes of information written about Blacklists, a good topic for a future blog.<\/p><p>In conclusion, the necessity of tarpitting, and classifying email as greylisted, whitelisted or blacklisted is the direct result of the steady progression of spammers and other malicious coders of which there is no end in sight. \u00a0These proactive measures aren\u2019t perfect, as you may well be aware of, but may be the best available for now.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1e5c6a8e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1e5c6a8e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column 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54.253z\"><\/path><\/svg>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Tarpitting and other sticky email issues. This morning you mailed to 750,000 subscribers, a simple newsletter and you cannot understand why the delivery rate is beyond slow, in fact, it is crawling.\u00a0 Your list members are all opted-in, you\u2019re not black listed anywhere and this is a scheduled mailing, people are expecting it.\u00a0 What\u2019s going [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":12,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[105],"tags":[84,95,3,27,8],"class_list":["post-2738","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-lists","tag-advertisement","tag-company-newsletters","tag-email-list-services","tag-marketing-strategies","tag-permission-based-email"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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