https://help.ubuntu.com/18.04/serverguide/jabberd2-server.html
At section "Configuration" delete the sentence:
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First, edit /etc/jabberd2/sm.xml changing:
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Set the sentece:
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First, edit /etc/jabberd2/sm.xml in the <local> section:
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At section "Configuration" delete the sentence:
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Next, edit /etc/jabberd2/c2s.xml in the <local> section change:
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Set the sentence:
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Next, edit /etc/jabberd2/c2s.xml in the <local> section:
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At section "Configuration" and at the second appearance of <id>jabber.example.com</id> delete the sentence:
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<id>jabber.example.com</id>
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Set the sentence:
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<id register-enable='mu'>localhost.localdomain</id>
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