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New Contributor Madfish64
New Contributor

How to request Optus Postmaster to unblock a blacklisted server?

Does anyone know how I contact the Optus Postmaster to check a Server IP and get it unblocked?

My emails are being consistently rejected as possible spam/virus, from one particular address.  See error message below
Diagnostic-Code: smtp; 553 5.3.0 Your message was rejected for
    possible spam/virus content.Please ask your email provider to visit for resolution.
I've visited the site suggested and confirmed that Server is indeed blacklisted (See below)
Currently blocked
Block started: 2019-02-20 12:31:11
Will Expire approximately: Nov 3rd, 2019 at 12PM ET

IP has been blocked 6 times in the past
So how do I either stop using this host or get Optus to request it is unblocked?
1 Reply
Esteemed Contributor
Esteemed Contributor

Re: How to request Optus Postmaster to unblock a blacklisted server?

You could try notifying Optus via the first link below however I am sure they are aware of their mail servers being constantly blocked. Unfortunately even changing mail servers is no guarantee that your mail wont be blocked as often a complete range of mail server IP addresses are blocked.



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