Outlook / Vista Email can receive but not send.

[J M]

I am using Vista and outlook. When traveling I have problems sending email.
I can receive it from others, but can not send it. I have disabled my
McAfee mail outbournd scanning, but still not working (also didnt reboot
yet). But when I return home, things are fine. Things have been fine until
the other day. Been trying to send. error message is:
telling me that I need to recheck the address or host IP is not valid

email scanning encountered a problem. This email message could not be sent.
After you verify the format of your reciepient's addresses, McAfee
recommends that you re-send those messages from your email program

Command sent: RCPT TO <my email address>
Command Received: 550 5.7.1 <my emailaddress>...Relaying denied. IP name
lookup failed

Anyone help me out ?

Thanks, John

 

[Brian Tillman]

I am using Vista and outlook. When traveling I have problems sending
email. I can receive it from others, but can not send it. I have
disabled my McAfee mail outbournd scanning, but still not working (also
didnt reboot yet). But when I return home, things are fine. Things have
been fine until the other day. Been trying to send. error message is:
telling me that I need to recheck the address or host IP is not valid

email scanning encountered a problem. This email message could not
be sent. After you verify the format of your reciepient's addresses,
McAfee recommends that you re-send those messages from your email
program
Command sent: RCPT TO <my email address>
Command Received: 550 5.7.1 <my emailaddress>...Relaying denied. IP
name lookup failed

You're not authenticating properly to your outbound server. You must use
the SMTP server of the service to which you are connected.

Also, if you're still getting messages that say "McAfee recommends", then it
seems you really haven't disabled mail scanning. Uninstall McAfee and
reinstall without the mail scanning feature.