How to deploy an artifact into Amazon S3 with Maven?

Question

I'm trying to follow these tutorials (1,2) to achieve the mentioned goal. But I'm still getting this error from Maven:

INFO] Installing /home/valter/temp-workspace/document-engine/target/application-1.0.0.CI-SNAPSHOT.jar to /home/valter/.m2/repository/com/company-solutions/application/1.0.0.CI-SNAPSHOT/application-1.0.0.CI-SNAPSHOT.jar
[INFO] Installing /home/valter/temp-workspace/document-engine/pom.xml to /home/valter/.m2/repository/com/company-solutions/application/1.0.0.CI-SNAPSHOT/application-1.0.0.CI-SNAPSHOT.pom
[INFO] 
[INFO] --- maven-deploy-plugin:2.7:deploy (default-deploy) @ application ---
Downloading: s3://myrepo.company.solutions/snapshot/com/company-solutions/application/1.0.0.CI-SNAPSHOT/maven-metadata.xml
[WARNING] s3://myrepo.company.solutions/snapshot - Connection refused
[WARNING] Could not transfer metadata com.company-solutions:application:1.0.0.CI-SNAPSHOT/maven-metadata.xml from/to s3.snapshot (s3://myrepo.company.solutions/snapshot): Could not connect to repository
[INFO] Logged off - myrepo.company.solutions
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:31 min
[INFO] Finished at: 2015-11-16T18:36:26+01:00
[INFO] Final Memory: 181M/1289M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project application: Failed to retrieve remote metadata com.company-solutions:application:1.0.0.CI-SNAPSHOT/maven-metadata.xml: Could not transfer metadata com.company-solutions:application:1.0.0.CI-SNAPSHOT/maven-metadata.xml from/to s3.snapshot (s3://myrepo.company.solutions/snapshot): Could not connect to repository: Status Code: 400, AWS Service: Amazon S3, AWS Request ID: 709B60A05E8E7062, AWS Error Code: InvalidRequest, AWS Error Message: The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

These are my local files, ~.m2/settings.xml (with fictious values, of course):

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 
      http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <servers>
        <server>
            <id>s3.site</id>
            <username>access_key</username>
            <password>private_key</password>
        </server>
        <server>
            <id>s3.release</id>
            <username>access_key</username>
            <password>private_key</password>
        </server>
        <server>
            <id>s3.snapshot</id>
            <username>access_key</username>
            <password>private_key</password>
        </server>
    </servers>
</settings>

And my pom.xml:

<project>
    <build>
        <extensions>
            <extension>
                <groupId>org.kuali.maven.wagons</groupId>
                <artifactId>maven-s3-wagon</artifactId>
                <version>1.2.1</version>
            </extension>
        </extensions>
        ...
    </build>
    <distributionManagement>
        <site>
            <id>s3.site</id>
            <url>s3://myrepo.company.solutions/site</url>
        </site>
        <repository>
            <id>s3.release</id>
            <url>s3://myrepo.company.solutions/release</url>
        </repository>
        <snapshotRepository>
            <id>s3.snapshot</id>
            <url>s3://myrepo.company.solutions/snapshot</url>
        </snapshotRepository>
    </distributionManagement>
...
</project>

I'm using Maven 3.3.3.

EDIT This is my policy simulator result:

Answer 1

Just to let you guys know what happened. The problem was the region of my bucket was Frankfurt, which requires the newest version of authentication from Amazon AWS, version 4. As far as I can tell, the plugin aws-maven doesn't support this new version right now. So the solutions was to move my bucket to another region which support the older version of schemes, like US Standard. And everything seems to work fine now!