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Mail from a gmail account will not get to you

4/22/2016

 
Picture
Senders Email bounces because the gmail SMTP server address is blacklisted
A gmail account sender receives a notice that their mail has bounced because their IP address has been blacklisted by the recipient.

How can I fix this problem?
This is likely a temporary problem that happens only with some senders, so one option is to simply wait until the problem goes away.

Why is this happening?
Some domains might use a Realtime Blacklist service (RBL) to identify and block mail from suspected spammers. If enough of those domains' users mark mail received from a particular IP address as spam, the RBL can blacklist that address, blocking all mail from it. If your sender's mail is being bounced, it's possible that an RBL service has blacklisted their domain's IP address.

But my domain doesn't send spam. How did we get blacklisted?
Gmail sends mail from a number of different IP addresses that shift regularly. If one of your messages goes out from an IP address that was blacklisted after someone else used it to send spam, the sender's mail can start getting bounced. Mail bounces only from recipients who use the RBL that blacklisted that address, and only while the address remains blacklisted. Eventually, the RBL will delist the IP address, or Gmail will assign you another sending address, and your mail will no longer bounce.

What does Google do about this?
Google can't prevent RBL services from blacklisting any of their IP addresses if a domain is indeed using it to send spam. However, Google is regularly in touch with such services to ask that they delist the addresses when they do get blacklisted.





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