unable to send test message / your ip is on our block list

[brent hall]

so this problem popped up out of the blue, i have had no prior problems
sending emails out and i have not made any setting changes.

i tried to send an email out and got a bounceback saying:

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Your message did not reach some or all of the intended recipients.

Subject: FW: testing
Sent: 11/17/2005 3:03 PM

The following recipient(s) could not be reached:

'(e-mail address removed)' on 11/17/2005 3:03 PM
553 your IP (66.245.216.12) is on our block list

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now, i get this message despite whom i send this email to. and it
appears that the outbound mail i send doesn't even hit the mail server,
as a "send/receive" both sends this email and gets me the bounceback,
where as typically i will have to do a "send" for the outbound and then
a "receive" to get the bounceback. and the bounceback does not reside
on my webmail server.

when i test my email accounts, i get the following message:

"unable to send test message. please verify the e-mail address field."

i have no problems receiving email, just sending. i have tried the
following:

-contacted my web host, who confirms no blocks
-turned off my firewall/spam software
-doublechecked all my email account outbound/inbound settings
-removed my email account and re-added it

i'm at a loss, found a few people on the usenet with similar problems
but no one with a clear solution. please help!

my email client is outlook 2002
outbound mail through my host, dslextreme
inbound mail through yahoo mail

 

[Jon]

First go to the email provider webmail and verify you can send from there.
if not they are blocking you.

I would uninstall (not disable) the firewall, internet security, etc.)
and test.

 

[brent hall]

I have already tried sending emails from my webmail and was successful.
I will try uninstalling my internet security, but something tells me
the problem lies elsewhere.

i also tried playing the mtu settings unsuccessfully. also tried
different port options for my outgoing server. no luck.

i have also specifically opened up port 25, which is what my outgoing
mail server uses. no luck.

what is interesting is that i tried to ping my outgoing server and it
timed out. does this mean the problem lies solely with my isp?

this problem has been referenced here:
http://groups.google.com/group/micr...address+field+outlook&rnum=2#a57ddc84f089d405

i've just posted there to see if anyone is still lurking there.