[EMAIL PROTECTED] wrote:

For example, apache/php applications that use this new server to send sign up emails out definitely mostly have these issues. On the other hand, users who have email accounts on that same server can send out to those domains without deferrals.

once I was using apache/php application on intranet machine (on local network) sending email using smtp of new QMT-ISO box (on public net)
and I get this error
... while talking to mails.myholding.com.:
>>> MAIL From:<[EMAIL PROTECTED]> SIZE=1313
<<< 511 sorry, can't find a valid MX for sender domain (#5.1.1 - chkuser)
554 5.0.0 Service unavailable

until finally I add my machine A record on DNS server, the application can use QMT to sending email again

http://am3n.profusehost.net/post/index/73/511-sorry-cant-find-a-valid-MX-for-sender-domain-511--chkuser

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