Mailcow: Add Domain Alias & Catch-All

Modified on Tue, 16 Dec, 2025 at 6:16 PM

Primary domain: maindomain.com

New alias domain: newcorp.com

Current catch-all mailbox: user@maindomain.com



Go to E-mail -> Configuration -> Aliases -> Domain Aliases -> Add domain alias

Alias domain: newcorp.com

Target domain: maindomain.com

Add


Go to E-mail -> Configuration -> Aliases -> Aliases -> Add alias

Alias address: @newcorp.com

Goto addresses: user@maindomain.com

Add

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