On October 19, 2021, we have enabled single-sign-on for our Plesk Support Center to provide a seamless login/account experience. This implies that you’ll be able to use a single account across any of our web-facing properties.
If you had already registered your account at Plesk 360 (formerly known as My Plesk) please use one for login. Otherwise please re-register it using the same email address as your existing Zendesk login (support account). It’s essential that you use the same email address on our support center to ensure that your tickets stay attached to the same account.

Mail delivery from or to particular domain fails: do not list domain example.com in BOTH virtual_alias_domains and virtual_mailbox_domain

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    Andreas Kaufmann

    Hi,

    sadly the workaround does not fix the problem. Are there another workaround to fix this issue?

    I've change the hostname to lowercase and even to another domain on this host. But both does not work.

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