<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Wed, May 27, 2015 at 12:24 PM, David Chisnall <span dir="ltr"><<a href="mailto:David.Chisnall@cl.cam.ac.uk" target="_blank">David.Chisnall@cl.cam.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span>On 27 May 2015, at 17:56, Reid Kleckner <<a href="mailto:rnk@google.com" target="_blank">rnk@google.com</a>> wrote:<br>
><br>
> I think I found the problem:<br>
> <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__opia.illinois.edu_content_targeted-2Dattack-2Dprotection-2Dtuning&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=Mfk2qtn1LTDThVkh6-oGglNfMADXfJdty4_bhmuhMHA&m=umSYZ6sE8xmOq6D8l61ozDG6AXunramR88hjBHVAgOU&s=7uqUi6A0KQy-APtn3f8LlK6qZg9GXjzSgJDpBbh6gGU&e=" target="_blank">https://opia.illinois.edu/content/targeted-attack-protection-tuning</a><br>
><br>
> UIUC is apparently rewriting HTML links in emails to redirect through <a href="http://urldefense.proofpoint.com" target="_blank">urldefense.proofpoint.com</a>. This is visible in my version of Rui's email.<br>
<br>
</span>Thanks for the investigation.  Can we turn this off?  Having emails with text containing URLs that is not the same as the link target URL is a big red flag for phishing and this is an absolutely terrible idea.  This would also explain why I’ve seen a number of LLVMdev emails show up in my spam folder - I hadn’t thought to check where their links were going.<br>
<br>
Rui: sorry for assuming that it was your fault,<br>
<div><div><br>
David<br>
<br></div></div></blockquote><div>David,</div><div><br></div><div>The bug <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D23643&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=Mfk2qtn1LTDThVkh6-oGglNfMADXfJdty4_bhmuhMHA&m=umSYZ6sE8xmOq6D8l61ozDG6AXunramR88hjBHVAgOU&s=O5olkOZcEKvADYHoqJElLkSF3Jwk908EGuVb-7Da-LQ&e=" target="_blank">https://llvm.org/bugs/show_bug.cgi?id=23643</a> is tracking this issue.  The URL rewriting is happening because we use the UIUC mail servers.  Tanya is contacting UIUC about getting <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=Mfk2qtn1LTDThVkh6-oGglNfMADXfJdty4_bhmuhMHA&m=umSYZ6sE8xmOq6D8l61ozDG6AXunramR88hjBHVAgOU&s=OSc-IB9IiZFQKzS1f1N0B2iL0xN0mBMMGPHsf3znpEY&e=" target="_blank">llvm.org</a> links whitelisted.</div><div><br></div><div>Richard </div></div></div></div>