rdelrosario
asked on
Mail delivery problems to the QQ.com domain
Hello,
We are trying to identify some mail delivery problems to the qq.com domain. (China) I have since setup a qq.com account to help identify the problems we are enountering.
In essence we are getting the below messages when sending to recipients on the qq.com domain..
154323323@qq.comDelivery status : Failed. Message could not be delivered to domain <qq.com> .Failed while initiating the protocol. <[( 154323323@qq.com', 554, 'RBL deny; Client host blocked by Spamhaus.org; http://www.spamhaus.org/query/bl?ip=xxx.xxx.xxx.xxx')]>
MTA Response :554
We've contacted spamhaus.org and have confirmed that we are not on their blacklists nor are we on any of 150 plus databases worldwide. Spamhaus told me to contact the QQ domain administrators to let them know that we are incorrectly being blacklisted.
It is worth noting that when I send an email from our domain to my qq.com email address, it gives the above error code. However, if I first send from my qq.com email address to my corporate address here in the USA then reply... the reply works fine to the qq.com address. Then subsequent emails work just fine to the qq.com domain from this user in the USA. I was first thinking that this was a default behavior of qq.com mailboxes... to deny all email unless they belong to their contact list, but I notice that some mail does get through to this qq.com account from other email accounts from both within our organization as well as from outside providers. (at&t, comcast).
Could you please shed some light on how things are being filtered inconsistently from us to the qq.com domain. Specifically, we are working with some clients in China that are not receiving our email. 60% of all our emails to this domain are being refused.
Any information you can give us regarding a way in which we can whitelist our mail to this qq.com domain or ways to improve our delivery rate would be most helpful. Please let us know who we can speak to or email if you are not the person we should be contacting.
We are trying to identify some mail delivery problems to the qq.com domain. (China) I have since setup a qq.com account to help identify the problems we are enountering.
In essence we are getting the below messages when sending to recipients on the qq.com domain..
154323323@qq.comDelivery status : Failed. Message could not be delivered to domain <qq.com> .Failed while initiating the protocol. <[( 154323323@qq.com', 554, 'RBL deny; Client host blocked by Spamhaus.org; http://www.spamhaus.org/query/bl?ip=xxx.xxx.xxx.xxx')]>
MTA Response :554
We've contacted spamhaus.org and have confirmed that we are not on their blacklists nor are we on any of 150 plus databases worldwide. Spamhaus told me to contact the QQ domain administrators to let them know that we are incorrectly being blacklisted.
It is worth noting that when I send an email from our domain to my qq.com email address, it gives the above error code. However, if I first send from my qq.com email address to my corporate address here in the USA then reply... the reply works fine to the qq.com address. Then subsequent emails work just fine to the qq.com domain from this user in the USA. I was first thinking that this was a default behavior of qq.com mailboxes... to deny all email unless they belong to their contact list, but I notice that some mail does get through to this qq.com account from other email accounts from both within our organization as well as from outside providers. (at&t, comcast).
Could you please shed some light on how things are being filtered inconsistently from us to the qq.com domain. Specifically, we are working with some clients in China that are not receiving our email. 60% of all our emails to this domain are being refused.
Any information you can give us regarding a way in which we can whitelist our mail to this qq.com domain or ways to improve our delivery rate would be most helpful. Please let us know who we can speak to or email if you are not the person we should be contacting.
tjdabomb
Did you contact the QQ domain administrators to let them know that we are incorrectly being blacklisted? the error message is pretty clear, a spamhaus lookup at the receivers mail server is rejecting your mail.
ASKER
Yes I tried to contact them, but they do not answer. I don't think they have any benefit in answering so I don't bet on a return email. I was hoping of another way to resolve this.. perhaps someone with experience with this domain in china
I donot have an idea about the nature of the receiving domain (qq.com).
What I have on my mind is maybe they are having more than one mail server. The RBL list is outdated on some servers. While the current updated DB on Spamhaus does not have your domain.
Well, it is just a thought... where your domain ever listed as spam anywhere?
Regards,
M Sallam
What I have on my mind is maybe they are having more than one mail server. The RBL list is outdated on some servers. While the current updated DB on Spamhaus does not have your domain.
Well, it is just a thought... where your domain ever listed as spam anywhere?
Regards,
M Sallam
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Have you tried using an SMTP connector (relay through a trusted server) that will take any email communications with that domain?
I cannot speak specifically about the QQ.com mail servers or admins. What I can tell you is that on my system, our mail server looks up domains and IP's upon incoming mail against spamhaus, and if the domain/ip is listed, our mail server can either send a refusal or just delete the email (we refuse).
Since spamhaus doesn't show you as being blocked and the "replied to" email does go through, I'd say the issue resides with the qq.com mail server. What specifically, I cannot say for sure.
Since spamhaus doesn't show you as being blocked and the "replied to" email does go through, I'd say the issue resides with the qq.com mail server. What specifically, I cannot say for sure.
ASKER
what