{"version":"1.0","provider_name":"Andy&#039;s Techie Blog","provider_url":"https:\/\/andyparkes.co.uk\/blog","title":"Syntactically invalid HELO argument(s) - Andy&#039;s Techie Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"TycVbDCkYz\"><a href=\"https:\/\/andyparkes.co.uk\/blog\/index.php\/2014\/09\/12\/syntactically-invalid-helo-arguments\/\">Syntactically invalid HELO argument(s)<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/andyparkes.co.uk\/blog\/index.php\/2014\/09\/12\/syntactically-invalid-helo-arguments\/embed\/#?secret=TycVbDCkYz\" width=\"600\" height=\"338\" title=\"&#8220;Syntactically invalid HELO argument(s)&#8221; &#8212; Andy&#039;s Techie Blog\" data-secret=\"TycVbDCkYz\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/andyparkes.co.uk\/blog\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"Yesterday I had a client report that certain emails were being bounced The SMTP error message was this 501 Syntactically invalid HELO argument(s) Not one I\u2019d seen before! As with most support queries one of the first questions to ask is \u201cwhat has changed?\u201d and this particular client has a Sonicwall Email Security Appliance thatRead More","thumbnail_url":"https:\/\/andyparkes.co.uk\/blog\/wp-content\/uploads\/2014\/09\/image_thumb2.png"}