On Wednesday, December 17th, 2025 at 11:13 PM, Wietse Venema via Postfix-users 
<[email protected]> wrote:

> 
> 
> Something removed some domain names from the Postfix mydestination
> setting, causing Postfix to reject mail for those domains with "554
> 5.7.1 Relay access denied".
> 
> Something also reset some login access permissions, and primary
> email address info.
> 
> All this without leaving an obvious trace of an intrusion.


Must be done by Advanced Persistent Threat (APT) hackers.

No doubt about that.

Regards,

Mr. Turritopsis Dohrnii Teo En Ming
Extremely Democratic People's Republic of Singapore
19 Dec 2025 Friday 11.13 am Singapore Time


> 
> > How can I make a request to Advanced Persistent Threat (APT) hackers
> > so that they will stop playing pranks on my Android (Linux) phones,
> > home desktop computer, laptops, Virtualmin and Webmin Linux servers
> > and other various numerous online accounts not secured with 2FA /
> > MFA?
> 
> 
> Your server is managed with Webmin and Virtualmin. The last major
> vulnerability was CVE-2024-12828 which allowed an authenticated
> remote attacker to execute arbitrary code with root privileges.
> Your server is running very recent versions of Webmin and Virtualmin.
> 
> Assuming that there is no new undisclosed vulnerability, you can
> set a stronger password on the managing account(s).
> 
> Wietse
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