• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

Adding email to a domain with an alias ?

Re

Check this
nslookup primary.co.uk
Server: 4.2.2.2
Address: 4.2.2.2#53

Non-authoritative answer:
Name: primary.co.uk
Address: 89.234.0.53

[root@ns3 ~]# nslookup
> set q=mx
> primary.co.uk
Server: 4.2.2.2
Address: 4.2.2.2#53

Non-authoritative answer:
primary.co.uk mail exchanger = 20 primary.co.uk.s200a2.psmtp.com.
primary.co.uk mail exchanger = 30 primary.co.uk.s200b1.psmtp.com.
primary.co.uk mail exchanger = 40 primary.co.uk.s200b2.psmtp.com.
primary.co.uk mail exchanger = 10 primary.co.uk.s200a1.psmtp.com.

Authoritative answers can be found from:
> set q=a
> primary.co.uk.s200a2.psmtp.com
Server: 4.2.2.2
Address: 4.2.2.2#53

Non-authoritative answer:
Name: primary.co.uk.s200a2.psmtp.com
Address: 207.126.147.12
>

It seems your mail server (MX) is pointing to different IP, unless both IPs are on the same server

John G
DataQuantum Cloud Systems
http://dataquantum.com
 
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