How Reproducible: Steps to Reproduce: 1. Go to https://rhn.redhat.com/rhn/users/ChangeEmail.do and change email then send verification email 2. check mailbox Actual Results:customer have never received a verification email. Expected Results:can receive a verification email Additional Information:This customer has never received verification email because his ISP's email server has been filtering the keyword "dev-null". It is impossible for him to change the rule of the ISO (juno.com). He has requested us to change the email address "dev-null".
Created attachment 121728 [details] email from this customer
This information is from the customer who has juno.com email address. To see Juno's dev-null block in action, try this: $ telnet mx.lax.untd.com 25 When Juno's mail server responds, enter: HELO redhat.com When Juno's mail server says, "pleased to meet you", enter: MAIL FROM: <dev-null.com> As soon as you do this, Juno's mail server will close the connection and you will see an "Access denied" error. If you change "dev-null" in this example to something else (presumably a real electronic mail address, but it doesn't have to be), you won't see the error. You can continue to talk to Juno's mail server, eventually enabling you to send a test message. For more information about the use of telnet() to test a mail server in this manner, see: http://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol
Email verification has been removed in RHN release 410.