scpexe won't honour .ssh/config information

scp test.xml sch-login01.osl.basefarm.net:/www/schibstedsok/data/httpd/dev.schibstedsok.no_443/htdocs/maven2/schibstedsok/commons-log4j/1.3-SNAPSHOT/test.xml

from the command line works just fine.
My local username is mick, and my login on the sch-login01 machine is mickw.
Correspondingly my .ssh/config file contains:
Host sch-login01.osl.basefarm.net
User mickw

My pom.xml specifies:
<distributionManagement>
<repository>
<url>scpexe://sch-login01.osl.basefarm.net/www/schibstedsok/data/httpd/dev.schibstedsok.no_443/htdocs/maven2</url>

But when running "mvn deploy" I get:

Uploading: scpexe://sch-login01.osl.basefarm.net/www/schibstedsok/data/httpd/dev.schibstedsok.no_443/htdocs/maven2/schibstedsok/commons-log4j/1.3-SNAPSHOT/commons-log4j-1.3-20060831.163911-1.jar
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error deploying artifact: Error executing command for transfer

Exit code 255 - Permission denied (publickey,password,keyboard-interactive).