A handful of my email users are getting an error message from external servers mailing to our servers. This error occurs when you change the letter case in the email address. Example, if you send from Yahoo! to my server using the address [EMAIL PROTECTED] the email will go through, but if you email from Yahoo! to my email server using the same address with case changes [EMAIL PROTECTED] you get a bounce back message stating address rejected: unverified address: Address verification in progress. What causes this error in these cases?
I attached a copy of the bounce back below. -- Tait ----- Original Message ---- From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Friday, August 15, 2008 2:23:22 PM Subject: failure notice Hi. This is the qmail-send program at yahoo.com. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <: [EMAIL PROTECTED] >: 38.119.86.21 does not like recipient. Remote host said: 450 4.1.1 <: [EMAIL PROTECTED] >: Recipient address rejected: unverified address: Address verification in progress Giving up on 38.119.86.21. I'm not going to try again; this message has been in the queue too long. --- Below this line is a copy of the message. Return-Path: <[EMAIL PROTECTED]> Received: (qmail 89507 invoked by uid 60001); 14 Aug 2008 20:23:14 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Ty pe:Message-ID; b=qlb5Hw9OwLI7RZnzTS3BEGqOaX8mkN0wYvkrAdhc0WFFGSp5lrwpj00L6P3xkdiCN21P3ZlE2U B34AeIYVPnCsHk1wl3XTmVaZBz8vd3eoNtVcVmirPu7AgPJvcODXpu5HsgdNemOoMb1JqAoAGrci w9Xz84iTPHAIKIuk6lL2Q=; X-YMail-OSG: W5V6t8UVM1kMOAAh5iDVLuZRXzN4b16..KndqCaZUGhO3pVsLg.HxlMh_kG7DLwQu_lm_mJVa7tU R4DDGbNJ1fGj64Vx6WegbdvTOsT1np.FYx4iiDU.qiKAtdS3jVjupOc- Received: from [121.97.81.84] by web56407.mail.re3.yahoo.com via HTTP; Thu, 14 Aug 2008 13:23:14 PDT X-Mailer: YahooMailRC/1042.48 YahooMailWebService/0.7.218.2 Date: Thu, 14 Aug 2008 13:23:14 -0700 (PDT) From: aimee desquitado < [EMAIL PROTECTED]> Subject: test To: [EMAIL PROTECTED] MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-659152865-1218745394=:89275" Message-ID: <[EMAIL PROTECTED]> --0-659152865-1218745394=:89275 Content-Type: text/plain; charset=us-ascii test --0-659152865-1218745394=:89275 Content-Type: text/html; charset=us-ascii <html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:verdana,helvetica,sans-serif;font-size:10pt"><div>test<br ></div></div><br> </body></html> --0-659152865-1218745394=:89275-- ref:00D3JLw.50085L67l:ref