I am having a problem with SMTP (I believe).
My exchange server only receives about every third email sent to it from the outside world. It was working fine but we just recently switched ISP’s and we are now using QWEST. QWEST is telling me that I need to set SMTP up to authenticate with them using the login they provided. I believe I have this done correctly but it didn?t seem to help.
My Exchange Server is version 5.5 with latest SP?s. Below is the error that the sender receives when it fails.
Hi. This is the qmail-send program at mpls-qmqp-03.inet.qwest.net.
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.
63.231.195.101 does not like recipient.
Remote host said: 553 relaying denied.
Giving up on 63.231.195.101.