Well luckily I'm the mail administrator on both sides of this issue! :)
What I found was that my firewall on the receiving side has a feature that utilizes uribl. Disabling this feature stopped the email rejections.
Upon further investigation into this (with the help of some others folks) it was determined that uribl might have changed the way they do their blacklist notifications now. It looks like their "whitelists" (i.e. those that should not be blocked) also return results now - which is probably why the uribl feature blocks the email.
http://uribl.com/about.shtml
>From what I can see, their whitelist is not included in the multi list or its not working.
I maybe off base on this but wanted to post what I have found so far. I am currently catching up on all the suggestions and info presented so far.
Thanks again for everybody's help.
Duane
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I've been researching an issue where emails are getting rejected with these NDR errors:
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
The following organization rejected your message: smoothwall.
_____
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
#552 www.w3.org in multi.surbl.org: 74.63.164.174 ##
#552 www.w3.org in multi.surbl.org: 204.232.162.153 ##
If I'm reading this correctly the emails are being rejected cause the multi.susrbl.org found a reference to w3.org in a HTML email??
How can this be fixed/removed/corrected?
Thanks,
Duane
Hello everyone,
I am a freehosting sysadmin and we are providing free registration of a
3-level domain within our 2-level domains.
As registration is free, some abuse is possible, but it does not appear
to be fair to list entire 2-level domain because of some abusers, which
would list innocent sites within same domain.
I am wondering, how our domains can be included in
http://www.surbl.org/tld/two-level-tlds ?
I see similar freehosting domain in this file, such as
by.ru, chat.ru, front.ru, hotbox.ru, hotmail.ru, land.ru
and others.
Here is the list of our freehosting domains:
aiq.ru
al.ru
bip.ru
bos.ru
dax.ru
dem.ru
dtn.ru
far.ru
fud.ru
hobi.ru
hop.ru
metastock.ru
pips.ru
rxt.ru
supercharts.ru
tora.ru
vipcentr.ru
vipshop.ru
viptop.ru
vov.ru
wallst.ru
webservis.ru
A right contact suggestions for this question or other hint would be
appreciated.
--
Best regards,
Victor Popov mailto:vpopov@centre.ru