Hope this helps
Swa version 9.4.0.52
Browser - IE 6.0 and Firefox 1.07
[root@mail logs]# cat scalix-swa_log.2006-05-03.txt
2006-05-03 13:32:57 StandardContext[/webmail]ip: 72.48.88.19; username:
user@company.net; message: <SOAP-ENV:Fault><faultcode>SOAP-ENV:SERVER.ArrayIndexOutOfBoundsException</faultcode><faultstring>0
</faultstring><detail><e:ArrayIndexOutOfBoundsException xmlns:e="http://scalix.com/errors"><message>0
</message><debug>java.lang.ArrayIndexOutOfBoundsException: 0
at javax.mail.internet.MimeMessage.getSender(MimeMessage.java:400)
at com.oddpost.server.mail.MessageEnvelopeConverter.convertStandardHeaders(MessageEnvelopeConverter.java:442)
at com.oddpost.server.mail.MessageEnvelopeConverter.convertToXml(MessageEnvelopeConverter.java:114)
at com.oddpost.server.mail.MailMessage.makeXmlForOneMessageHeader(MailMessage.java:465)
at com.oddpost.server.mail.MailMessage.getHeaders(MailMessage.java:520)
at com.oddpost.server.mail.MailMessage.fetchHeadersXml(MailMessage.java:817)
at com.oddpost.server.module.SoapMail.fetchMessageHeaders(SoapMail.java:667)
at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.oddpost.soap.SoapModule.invokeMethod(SoapModule.java:238)
at com.oddpost.soap.SoapRequestImpl.execute(SoapRequestImpl.java:140)
at com.oddpost.server.HttpRequestHandler.handleRequest(HttpRequestHandler.java:221)
at com.oddpost.server.SoapServlet.doPost(SoapServlet.java:50)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.oddpost.server.filter.HttpConfFilter.doFilter(HttpConfFilter.java:175)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
... skipping the last 25 lines as irrelevant...
</debug></e:ArrayIndexOutOfBoundsException></detail></SOAP-ENV:Fault>