Hi Jeroen , I’ve escalated this issue to the Windows Live Hotmail Sender Support Team . They’ll contact the e-mail administrator of the domain you mentioned. You may also advise your domain admin to go to http://postmaster.live.com and review our policies... More

Hi Jeff , I regret to inform you that we can’t tell how someone can access your account. You may want to check these tips on how to keep your account more secure: http://windowslivehelp.com/community/p/61473/255196.aspx#255196 More

@ lifeisgoodindover We can’t confirm whether an account was hacked into or provide you any information about who may have done so. You can check out this link to know what to do if you think your account has been stolen: http://windowslivehelp.com/solutions/accounts... More

@ Li1976 I’ve escalated this issue to the Windows Live Hotmail Sender Support Team . They’ll contact the e-mail administrator of the domains you mentioned. If you’re in contact with them, give us the e-mail address where the Windows Live Hotmail Sender... More

[quote user="canterj33"] Domain name Findlay.edu [/quote] Check out this link so you can read the response of Enzo M. to you: http://windowslivehelp.com/community/t/160890.aspx More

@ canterj33 I’ve verified that Enzo M. has responded to you here: http://windowslivehelp.com/community/t/160890.aspx More

@ fjompe and zaku We’re aware of this issue and we found out that Malware is one of the causes. I suggest that you check out this link to learn more about this issue: http://windowslivehelp.com/solutions/safety/archive/2009/04/29/recent-reports-of-account-hijacks... More

@ dan17 Let me know your Hotmail e-mail address and the exact error message you received so I can investigate on this. BTW, we recommend that you send e-mail to 100 recipients per e-mail. This is to ensure that your e-mail will be delivered to the intended recipients... More

@ Moz Let me know your Hotmail e-mail address and the exact error message you received so I can immediately investigate on this. More

@ dareen The jagged character challenge or Human Interface Proofing (HIP) is used to prevent spam computers from sending unsolicited e-mail to large numbers of recipients. Our human customers prove they are human by answering the jagged character challenge. Anyway,... More