Blocking IP address

We currently uses the ip address for all of our customers emails.

I have looked and there doesnt appear to be any blacklisting on that ip address however whenever someone emails a email address from that specific ip the following message appears on a bounce back:

host [] SMTP error from remote mail server after MAIL 550 5.0.0 We don’t accept mail from DO spammers<165.22.227>

Please advise on having that specific IP address removed from the block or if you have any suggestions on why we are being blocked by


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I am also experiencing this, on an IP address we’ve used as a postfix server for over 10 years with no legitimate blacklisting, and no current blacklisting. Used only for transactional and product support emails to our 5000 paying customers – no newsletters or advertising. It would be nice for DO to take this on on behalf of all the good actors within their customer base.[] said: 550 5.0.0 We don’t accept mail from DO spammers<107.170.222> (in reply to MAIL FROM command)

We’re also getting this -

550 5.0.0 We don’t accept mail from DO spammers<167.71.118> (in reply to MAIL FROM command)

Seems like something DO needs to resolve of they’re just outright blocking any DO IP’s. Our IP is not on any spam blacklists anywhere. It affects a ton of our recipients.

I have the same problem with my email server hosted on DigitalOcean. I have had this IP for over 6 years and it’s been kept off blacklists for that entire time. I implement SPF, DKIM, DMARC, etc. Megamailservers is the only entity that blocks my mail.

I have reached out to several times over the past year, and never heard back. Has anyone else had any luck? is an alias for has address has IPv6 address 2604:a880:1:20::184b:b001 host[] said: 550 5.0.0 We don’t accept mail from DO spammers<198.199.107> (in reply to MAIL FROM command)