Blocking IP address

Posted January 3, 2020 498 views

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


1 comment
  • Hi there,

    Just to clarify, emails from (which is emails) are being blocked when sent to emails run by

    - Matt.

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4 answers

emails from to any email address are being blocked when sent to emails run by

SaskTels MX records point to IN MX

preference: 100
exchange: 42300s (11:45:00) IN MX

preference: 10
exchange: 42300s (11:45:00) IN MX

preference: 110
exchange: 42300s (11:45:00)

  • Hi there,

    If that’s the case, I’d suggest reaching out to the folks over at or and asking them to unblock the IP address that you’re sending emails from.

    Hope that helps!
    - Matt.

Thanks Matt,

We have endlessly tried for the past couple of days. We were hoping you had some insight on getting it resolved.

  • Unfortunately not. Some providers simply do a range block against the whole of DigitalOcean due to bad actors using Droplets to spam before we can shut them down. We always encourage providers to only block IPs they’ve identified as spam, so that they don’t impact legitimate users like yourself.

    As said before though, this block is something they’re in control of, not something that we are, so there isn’t much we can do here really. Sorry!

I just ran into this issue as well. Emailed to try and get my specific server’s IP white listed. Fingers crossed they do.


We are still having the issue of emails being blocked. However we did hear back from them, with the response “we did not block the bank of ip addresses” but they said they have forwarded the email thread off to and to see if they have. You may want to try sending your email request off to those 2 email addresses as well.

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