Original thread is here with the exact problem I am having but it is to old to respond too: »Emails to Insightbb Aren't Delivered
Emails to Insightbb Aren't Delivered
Every email we're trying to send to Insight friends (just Insight, nowhere else) has been bouncing for the past 5 days. I'm getting this error code in the body of the notification:
> > > SMTP error from remote server in greeting:
> > > host mx.insight.synacor.com[18.104.22.168]:
> > > 421 4.7.0 Too much spam
Our ISP is AT&T (Bellsouth) and we use a 1&1.com-purchased domain name for all emails, so we're not using "bellsouth.net" addresses when sending outbound mail through Outlook, we're using multiple @blah-blah.com addresses - several of them.
When I switch to a Gmail account to send, it goes through.
1&1 customer support insist it's my ISP's issue: "the host mx.insight.synacor.com [22.214.171.124] is an IP address of Insight and was being blocked by your current ISP provider".
My question: is it an Insight issue, an AT&T issue, or a 1&1 issue? I don't understand, if it's an AT&T issue why the gmail-sent mail goes through?
I'm just confused... not to mention why this would have happened in the first place!
The same exact thing happening in that thread is happening here. We have a company hosted through 1and1 and they are using insightBB as their ISP. When sending emails from their 1and1 email accounts to any account that is @insightbb.com they get the following message:
From: Mail Delivery System [mailto:email@example.com]
Sent: Saturday, October 20, 2012 9:55 AM
Subject: Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. The following addresses failed:
SMTP error from remote server in greeting:
421 4.7.0 Too much spam.
retry timeout exceeded"
We have called both 1and1 and insightbb multiple times. This is 1and1's latest response:
"Thank you for contacting us.
The bounce message "Too much spam" is generated when the recipients mark a message as "spam", or if the message end up directly on your spam folder. When the message has been flagged as junk by a high number of recipients (50% of total # of messages/hour), the sender in question is blocked. This means that this block is entirely due to the feedbacks sent from email recipients. The block will expire on its own only when no email messages (of any kind) are sent by the blocked sender for 24 hours.
To prevent this issue from happening again, You have to perform a thorough auditing of its distribution lists and, if needed, review and amend its opt-in policy. You may also want to subscribe to feedback loops with the service providers they send mailings to. This will help him monitoring who is flagging its emails as spam. "
None is this worked or helped. Insight is saying that they are looking into it and their system admins have been notified.
We are on the verge of leaving 1and1 for good because of this and I have a feeling its more of an insight problem. Our customers have to be able to e-mail and we are running out of time to fix their problem. Also they aren't sending any spam e-mails, just email to their clients they are representing. Any ideas?