Re: E-Mail Address Can't Receive E-Mail from *Some* External Organizations

In the URL
http://www.dnsreport.com/tools/mail.ch?domain=this.company.org
put real domain name and compare output with that of
http://www.dnsreport.com/tools/mail.ch?domain=company.org
Or you can post real names here.

Craig wrote:
Hello,

I am running Windows Small Business Server 2003 with Exchange 2003 SP2.

The public Internet domain name for our organization is "company.org". E-mail messages that are addressed to "user@xxxxxxxxxxx" that are sent from outside organizations arrive just fine in my users' Exchange mailboxes.

However, the bosses have decided that they now want the organization's e-mail addresses to have the form "user@xxxxxxxxxxxxxxxx".

What I'm finding is that *some* external systems can successfully send messages to the "user@xxxxxxxxxxxxxxxx" form of our e-mail address, but that others cannot.

For example, I can send a message to "me@xxxxxxxxxxxxxxxx" from my Comcast or Gmail accounts, and that works fine; the message is successfully received in my Exchange mailbox. However, if I send a message to "me@xxxxxxxxxxxxxxxx" from my Yahoo e-mail account, I get an NDR returned to my Yahoo account (qmail error "I wasn't able to establish an SMTP connection, #4.4.1").

Again, messages addressed to "user@xxxxxxxxxxx" are consistently successful.

I have checked with our ISP who handles our DNS settings, and they indicate that all appears to be in order with our DNS and MX records.

Does anyone have any suggestions as to what the problem might be, and how I can correct it so that messages addressed to "user@xxxxxxxxxxxxxxxx" can be consistently and successfully received?


Thanks,

Craig



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