We have also run into enormous trouble with one of the client (they are sending opt-in press releases) as this change has happened without any prior notification.
Also, I don't really see how this can benefit SPAM, at least in our client case. They are hosting mailing software (Oempro) on H9 server, but all the email is being sent via outside SMTP server dedicated to that service only. That way there is no option that H9 server could be blacklisted, as the e-mail originates from SMTP server.
Currently, we were forced to change settings so that all the mailings are sent directly thru H9 server, which is not only causing additional load on the server, but greatly increases possibility for server being blacklisted (because of bounce, etc...).
Please correct me if I'm wrong...
Regards, Dejan.
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