Impossible to use a user name containing @ in IMAP transport (probably affects all transports)

• User impact:

  High
• Configuration:

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  <imap:inbound-endpoint host="..." port="143" user="user%40domain" password="..." />

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  <imap:inbound-endpoint host="..." port="143" user="user%40domain" password="..." />
• Log Output:

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  ERROR 2010-10-11 12:23:37,896 [main] org.mule.MuleServer:
  ********************************************************************************
  Message : The endpoint "imap://mule@dossot.net:esb123@mail.gandi.net:143" is malformed and cannot be parsed. If this is the name of a global endpoint, check the name is correct, that the endpoint exists, and that you are using the correct configuration (eg the "ref" attribute). Note that names on inbound and outbound endpoints cannot be used to send or receive messages; use a named global endpoint instead.
  Code : MULE_ERROR-64051
  --------------------------------------------------------------------------------
  Exception stack is:
  1. The endpoint "imap://mule@dossot.net:esb123@mail.gandi.net:143" is malformed and cannot be parsed. If this is the name of a global endpoint, check the name is correct, that the endpoint exists, and that you are using the correct configuration (eg the "ref" attribute). Note that names on inbound and outbound endpoints cannot be used to send or receive messages; use a named global endpoint instead. (org.mule.api.endpoint.MalformedEndpointException)
    org.mule.endpoint.UserInfoEndpointURIBuilder:34 (http://www.mulesoft.org/docs/site/current2/apidocs/org/mule/api/endpoint/MalformedEndpointException.html)
  --------------------------------------------------------------------------------
  Root Exception stack trace:
  org.mule.api.endpoint.MalformedEndpointException: The endpoint "imap://mule@dossot.net:esb123@mail.gandi.net:143" is malformed and cannot be parsed. If this is the name of a global endpoint, check the name is correct, that the endpoint exists, and that you are using the correct configuration (eg the "ref" attribute). Note that names on inbound and outbound endpoints cannot be used to send or receive messages; use a named global endpoint instead.
  at org.mule.endpoint.UserInfoEndpointURIBuilder.setEndpoint(UserInfoEndpointURIBuilder.java:34)
  at org.mule.endpoint.AbstractEndpointURIBuilder.build(AbstractEndpointURIBuilder.java:55)
  at org.mule.endpoint.MuleEndpointURI.initialise(MuleEndpointURI.java:172)
      + 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)
  ********************************************************************************

  Show

  ERROR 2010-10-11 12:23:37,896 [main] org.mule.MuleServer: ******************************************************************************** Message : The endpoint "imap://mule@dossot.net:esb123@mail.gandi.net:143" is malformed and cannot be parsed. If this is the name of a global endpoint, check the name is correct, that the endpoint exists, and that you are using the correct configuration (eg the "ref" attribute). Note that names on inbound and outbound endpoints cannot be used to send or receive messages; use a named global endpoint instead. Code : MULE_ERROR-64051 -------------------------------------------------------------------------------- Exception stack is: 1. The endpoint "imap://mule@dossot.net:esb123@mail.gandi.net:143" is malformed and cannot be parsed. If this is the name of a global endpoint, check the name is correct, that the endpoint exists, and that you are using the correct configuration (eg the "ref" attribute). Note that names on inbound and outbound endpoints cannot be used to send or receive messages; use a named global endpoint instead. (org.mule.api.endpoint.MalformedEndpointException)   org.mule.endpoint.UserInfoEndpointURIBuilder:34 (http://www.mulesoft.org/docs/site/current2/apidocs/org/mule/api/endpoint/MalformedEndpointException.html) -------------------------------------------------------------------------------- Root Exception stack trace: org.mule.api.endpoint.MalformedEndpointException: The endpoint "imap://mule@dossot.net:esb123@mail.gandi.net:143" is malformed and cannot be parsed. If this is the name of a global endpoint, check the name is correct, that the endpoint exists, and that you are using the correct configuration (eg the "ref" attribute). Note that names on inbound and outbound endpoints cannot be used to send or receive messages; use a named global endpoint instead. at org.mule.endpoint.UserInfoEndpointURIBuilder.setEndpoint(UserInfoEndpointURIBuilder.java:34) at org.mule.endpoint.AbstractEndpointURIBuilder.build(AbstractEndpointURIBuilder.java:55) at org.mule.endpoint.MuleEndpointURI.initialise(MuleEndpointURI.java:172)     + 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything) ********************************************************************************
• Similar Issues:

  None

In Mule 2, it was possible to use a user name containing a @ by escaping it as %40 as shown in the configuration field.

In Mule 3, the log output shows the error I get. Using @ instead of %40 doesn't help.

It seems related to MULE-5084 (i.e. endpoint address gets unescaped too early and becomes an invalid URI).