The first rule works fine when the maintenance file is in place. When it's not - the second rule is not redirecting to the specific URI. Is there an ordering issue of rules or ?
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RewriteCond %{DOCUMENT_ROOT}/server_maintenance.html -f
RewriteCond %{REQUEST_FILENAME} !/server_maintenance.html
RewriteRule ^.*$ /server_maintenance.html [L]
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## the %{HTTP_HOST} evaluates to the HTTP header with the name given in this case host.server.org, with NC being non case sensitive.
## it will rewrite the url at the server side to append the URI of lawson/portal
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RewriteCond %{HTTP_HOST} ^host\.server\.org$ [NC]
RewriteRule ^host\.server\.org$ "https\:\/\/host\.server\.org\/lawson\/portal" [L]
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