{"id":341,"date":"2016-05-14T20:43:00","date_gmt":"2016-05-14T20:43:00","guid":{"rendered":"http:\/\/www.gmass.co\/blog\/?p=341"},"modified":"2016-05-14T20:43:00","modified_gmt":"2018-07-11T06:24:27","slug":"how-to-handle-this-strange-gmail-bounce-read-error-genericfailed_precondition","status":"publish","type":"post","link":"https:\/\/www.gmass.co\/blog\/how-to-handle-this-strange-gmail-bounce-read-error-genericfailed_precondition\/","title":{"rendered":"How to handle this strange Gmail bounce: &#8220;read error: generic::failed_precondition&#8221;"},"content":{"rendered":"<div dir=\"ltr\" style=\"text-align: left;\">Several users have recently reported seeing bounce backs from Gmail that look like this:<br \/>\n<span style=\"font-family: 'courier new' , 'courier' , monospace;\"><br \/>\n<\/span><span style=\"font-family: 'courier new' , 'courier' , monospace;\"><span style=\"background-color: white; border: 0px; color: #222222; font-size: 12.8px; margin: 0px; padding: 0px;\">Delivery to the following recipient failed permanently:<\/span><br style=\"background-color: white; color: #222222; font-size: 12.8px;\" \/><br style=\"background-color: white; color: #222222; font-size: 12.8px;\" \/><span style=\"background-color: white; border: 0px; color: #222222; font-size: 12.8px; margin: 0px; padding: 0px;\">Technical details of permanent failure:<\/span><br style=\"background-color: white; color: #222222; font-size: 12.8px;\" \/><span style=\"background-color: white; border: 0px; color: #222222; font-size: 12.8px; margin: 0px; padding: 0px;\">read error: generic::failed_precondition: read error (0): error<\/span><\/span><\/p>\n<p>We&#8217;ve seen bounces like this for both regular Gmail users and Google Apps users using GMass. The error is a non-standard bounce message that is specific to sending via the Google platform. What causes the error? Nobody is certain for sure, but the Internet speculates that it&#8217;s either one of the following:<\/p>\n<ol style=\"text-align: left;\">\n<li>The remote server is <b>rejecting the email due to an SPF failure<\/b>. This is applicable to Google Apps users that are sending from their own organization&#8217;s domain, not from gmail.com or googlemail.com.<\/li>\n<li>The remote server is <b>rejecting the email because Gmail&#8217;s sending IP is blacklisted<\/b>, but Gmail doesn&#8217;t want the end user to know that&#8217;s the reason for the fail, so this generic message is delivered instead.<\/li>\n<\/ol>\n<div>Regarding reason #2, generally we&#8217;ve seen that the deliverability through Gmail&#8217;s servers is the world&#8217;s best, but it seems that\u00a0<a href=\"http:\/\/www.sorbs.net\/lookup.shtml?209.85.223.170\">occasionally even Gmail&#8217;s servers get blacklisted<\/a>.<\/p>\n<p>Regarding reason #1, if you&#8217;re a Google Apps user, regardless of whether you&#8217;re using GMass, <a href=\"https:\/\/toolbox.googleapps.com\/apps\/checkmx\/\">ensure that you have SPF set up correctly for your domain<\/a>. That means you need to <a href=\"https:\/\/support.google.com\/a\/answer\/178723?hl=en&amp;ref_topic=2759192\">configure the DNS for your domain to allow email to be sent by Google&#8217;s servers<\/a> on behalf of your domain. You can <a href=\"https:\/\/toolbox.googleapps.com\/apps\/checkmx\/\">check if your domain is configured allow Google to send email on its behalf via this easy-to-use tool<\/a>. Just input your domain, and check the results. I just checked my own domain, <b>wordzen.com<\/b>, which runs on Google Apps, and noticed an issue, which I&#8217;m about to fix:<\/div>\n<div style=\"clear: both; text-align: center;\"><\/div>\n<table style=\"margin-left: auto; margin-right: auto; text-align: center;\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><a style=\"margin-left: auto; margin-right: auto;\" href=\"https:\/\/3.bp.blogspot.com\/-yAL8kl0v3-s\/VzeKHogMHVI\/AAAAAAAABzk\/X1Y8Qbe3czoLylIm7AokIxy_q3IM99XDwCLcB\/s1600\/Screenshot%2B2016-05-14%2B15.26.11.png\" data-rel=\"lightbox-image-0\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/3.bp.blogspot.com\/-yAL8kl0v3-s\/VzeKHogMHVI\/AAAAAAAABzk\/X1Y8Qbe3czoLylIm7AokIxy_q3IM99XDwCLcB\/s640\/Screenshot%2B2016-05-14%2B15.26.11.png\" width=\"640\" height=\"379\" border=\"0\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">The SPF record for wordzen.com breaks the rules by requiring too many DNS lookups.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div>\nIn the case of wordzen.com&#8217;s SPF record, the record includes permission for Google&#8217;s servers to send email for wordzen.com, but here&#8217;s an example of a domain of a GMass user where SPF doesn&#8217;t include Google&#8217;s servers at all:<\/div>\n<div><\/div>\n<div style=\"clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"https:\/\/1.bp.blogspot.com\/-BYw0dlRnXiE\/VzeLC8aQ7aI\/AAAAAAAABzs\/5XkduX9ZjxcRYuIILWm-3-hUpxqoRxLkACLcB\/s1600\/Screenshot%2B2016-05-14%2B15.29.01.png\" data-rel=\"lightbox-image-1\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/1.bp.blogspot.com\/-BYw0dlRnXiE\/VzeLC8aQ7aI\/AAAAAAAABzs\/5XkduX9ZjxcRYuIILWm-3-hUpxqoRxLkACLcB\/s640\/Screenshot%2B2016-05-14%2B15.29.01.png\" width=\"640\" height=\"182\" border=\"0\" \/><\/a><\/div>\n<div><\/div>\n<div>If you still see this bounce notification after ensuring correct SPF settings, or if you&#8217;re not a Google Apps user, it could be issue #2 at play.<\/div>\n<h3><span style=\"color: #993300;\">How is GMass handling these bounces?<\/span><\/h3>\n<div>Since <a href=\"http:\/\/blog.gmass.co\/2016\/03\/gmail-email-marketing-reply-management.html\">GMass categories all bounces and replies<\/a> for you, and builds an internal <b>Bounce List<\/b> for your account in order to suppress future mailings to bounced addresses, we&#8217;ve added these bounces to our &#8220;Bounce Exception&#8221; list, meaning we won&#8217;t count addresses that bounce with this message as a true bounce. That means that future attempts to send to these addresses will still work.<\/div>\n<div><\/div>\n<div>We&#8217;ve also deleted all bounces that were on your account&#8217;s <b>Bounce List<\/b> in the past because of this issue.<\/div>\n<h3><span style=\"color: #993300;\">References<\/span><\/h3>\n<div>Here&#8217;s an <a href=\"https:\/\/productforums.google.com\/forum\/#!msg\/apps\/J0oDU6T3qdw\/6LwvseQ-KgAJ\">example of a Google Apps user that corrected this issue by modifying his SPF record<\/a>.<\/div>\n<div><\/div>\n<div>Here&#8217;s an <a href=\"https:\/\/productforums.google.com\/forum\/#!msg\/gmail\/mS6dc-4qgus\/SQC1E0nuMQAJ\">example where it&#8217;s suggested the bounce is due to a blacklisting of Gmail&#8217;s IP address<\/a>.<\/div>\n<div><\/div>\n<div>Here&#8217;s a <a href=\"http:\/\/comments.gmane.org\/gmane.network.ripe.anti-abuse\/699\">post suggesting that Google is masking the blacklisting of their IP with this particular generic bounce message<\/a>.<\/div>\n<div><\/div>\n<div>This <a href=\"http:\/\/blog.frankleonhardt.com\/2015\/problems-receiving-mail-from-gmail-starttls-is-a-bad-idea\/\">email expert received a similar bounce but the bounce mentioned a TLS failure<\/a>.<\/div>\n<div><\/div>\n<p><span style=\"background-color: white; border: 0px; color: #222222; font-family: 'arial' , sans-serif; font-size: 12.8px; margin: 0px; padding: 0px;\"><br \/>\n<\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Several users have recently reported seeing bounce backs from Gmail that look like this: Delivery to the following recipient failed permanently:Technical details of permanent failure:read error: generic::failed_precondition: read\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1954,4,4270],"tags":[],"class_list":["post-341","post","type-post","status-publish","format-standard","hentry","category-email-deliverability","category-gmail","category-unsubscribes-and-bounces"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>How to handle this strange Gmail bounce: &quot;read error: generic::failed_precondition&quot;<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.gmass.co\/blog\/how-to-handle-this-strange-gmail-bounce-read-error-genericfailed_precondition\/\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" 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