I enabled debugging in Archiva and according to the log it cannot download an existing artifact from this URL:
http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom (For my test I used the "admin" user; the "external-repository" proxies "Maven Central Repository"). The same URL opens in my browser without a problem (the browser is configured to use the same proxy configuration as Archiva). This is clearly a bug. The log follows below. (I removed proxy host name, port and my username from below log). ======================================== 2011-10-21 17:46:53,957 ["http-apr-8080"-exec-2] DEBUG org.codehaus.plexus.redback.system.DefaultSecuritySystem - User 'admin' authenticated. 2011-10-21 17:46:53,958 ["http-apr-8080"-exec-2] DEBUG org.codehaus.plexus.redback.system.DefaultSecuritySystem - User 'admin' exists. 2011-10-21 17:46:53,958 ["http-apr-8080"-exec-2] DEBUG org.codehaus.plexus.redback.system.DefaultSecuritySystem - User: username = 'admin' password = 'null' encodedPassword = <encoded password>' fullName = 'Admin' email = '<email>' locked = 'false' permanent = 'true' validated = 'false' passwordChangeRequired = 'false' 2011-10-21 17:46:53,969 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.webdav.ArchivaDavResourceFactory - Managed repository 'external-releases' accessed by 'admin' 2011-10-21 17:46:53,969 ["http-apr-8080"-exec-2] DEBUG org.codehaus.plexus.redback.rbac.cached.CachedRbacManager - building user permission map 2011-10-21 17:46:54,080 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Path [org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom] is not part of defined whitelist (skipping transfer from repository [Java.net Repository for Maven 2]). 2011-10-21 17:46:54,080 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Applying [releases] policy with [always] 2011-10-21 17:46:54,080 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.policies.AbstractUpdatePolicy - OK to update, releases policy set to ALWAYS. 2011-10-21 17:46:54,080 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Applying [snapshots] policy with [never] 2011-10-21 17:46:54,080 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.policies.AbstractUpdatePolicy - OK to update, snapshot policy does not apply for non-snapshot versions. 2011-10-21 17:46:54,081 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Applying [cache-failures] policy with [no] 2011-10-21 17:46:54,081 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.policies.CachedFailuresPolicy - OK to fetch, check-failures policy set to NO. 2011-10-21 17:46:54,081 ["http-apr-8080"-exec-2] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'wagon#http' 2011-10-21 17:46:54,098 ["http-apr-8080"-exec-2] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'wagon#http' 2011-10-21 17:46:54,099 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Using network proxy <proxy host and port> to connect to remote repository http://repo1.maven.org/maven2; as user: <my proxy user> 2011-10-21 17:46:54,102 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Retrieving org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom from Central Repository 2011-10-21 17:46:54,704 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Applying [propagate-errors] policy with [queue error] 2011-10-21 17:46:54,705 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Applying [propagate-errors-on-update] policy with [artifact not already present] 2011-10-21 17:46:54,707 ["http-apr-8080"-exec-2] WARN org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Transfer error from repository "central" for artifact org.apache.maven.plugins:maven-deploy-plugin:2.4::pom, continuing to next repository. Error message: Download failure on resource [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom]:Access denied to: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom 2011-10-21 17:46:54,709 ["http-apr-8080"-exec-2] DEBUG org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors - Full stack trace org.apache.maven.archiva.proxy.ProxyException: Download failure on resource [http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom]:Access denied to: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.4/maven-deploy-plugin-2.4.pom at org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors.transferSimpleFile(DefaultRepositoryProxyConnectors.java:734) at org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors.transferFile(DefaultRepositoryProxyConnectors.java:502) at org.apache.maven.archiva.proxy.DefaultRepositoryProxyConnectors.fetchFromProxies(DefaultRepositoryProxyConnectors.java:166) at org.apache.maven.archiva.webdav.ArchivaDavResourceFactory.fetchContentFromProxies(ArchivaDavResourceFactory.java:623) at org.apache.maven.archiva.webdav.ArchivaDavResourceFactory.processRepository(ArchivaDavResourceFactory.java:456) at org.apache.maven.archiva.webdav.ArchivaDavResourceFactory.createResource(ArchivaDavResourceFactory.java:246) at org.apache.maven.archiva.webdav.RepositoryServlet.service(RepositoryServlet.java:117) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:416) ---------------------------------------------------------------------- This message w/attachments (message) is intended solely for the use of the intended recipient(s) and may contain information that is privileged, confidential or proprietary. 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