what's happening with the mailing lists subscription?

[nomnex]

I can’t subscribe to any of the lists, page http://www.libreoffice.org/get-help/mailing-lists/

Subject: Delivery Status Notification (Failure)
Date: Tue, 21 Aug 2012 07:06:28 +0000

Delivery to the following recipient failed permanently:

 documentation subscribe@global.libreoffice.org

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain.

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Subject: Delivery Status Notification (Failure)
Date: Tue, 21 Aug 2012 07:11:32 +0000

Delivery to the following recipient failed permanently:

 users subscribe@global.libreoffice.org

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain.

[SveinníFelli]

Did your recipient address look like this:

users+subscribe@global.libreoffice.org

That is with the plus sign (+) ?