1.0Vds Systemshttps://www.vdssystems.be/en/rich600338<blockquote class="wp-embedded-content" data-secret="UazunTemlx"><a href="https://www.vdssystems.be/en/2014/11/exchange-2003-to-exchange-2013-migration/">Exchange 2003 to exchange 2013 migration</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.vdssystems.be/en/2014/11/exchange-2003-to-exchange-2013-migration/embed/#?secret=UazunTemlx" width="600" height="338" title="“Exchange 2003 to exchange 2013 migration” — Vds Systems" data-secret="UazunTemlx" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> i’m not going to write the entire procedure here since there are a lot of good articles out there. here are some I always use when im migrating exchange servers from 2003 or 2007 to 2010 or 2013 so thank you Pete Long For migrating exchange 2003 to 2013 you will need an additional step and migrate to exchange 2010 first. The following links are very good to follow all migrations Exchange 2003 to 2010 Exchange 2010 to 2013 enjoy and good luck