How will I know when I am on Postini?

[#1]

How will I know when I have been transferred to Postini? I don't use the PN spam tools and therefore don't see tagged mail. I haven't received an email saying I've been transferred.

[#2]

You need to look in the email headers.
See http://community.plus.net/forum/index.php/topic,58066.0.html

[#3]

I've just downloaded a spam email with the following header details. I see it has "X-pn-pstn" in it so I presume, from what you say, that I am on Postini. Was an email sent out to people telling them when they were transferred?
Subject: exclusive watches rolex
Date: Tue, 12 Feb 2008 17:00:27 -0900
MIME-Version: 1.0
Content-Type: text/plain;
format=flowed;
charset="iso-8859-1";
reply-type=original
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1106
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106
X-Antivirus: avast! (VPS 080211-0, 2008/02/11), Outbound message
X-Antivirus-Status: Clean
X-pstn-levels:    (S: 0.00000/ 8.84550 CV:99.9000 )
X-pstn-status: off
X-pn-pstn: Spam 1
X-PN-VirusFiltered: by PlusNet MXCore (v2.00)
All kind of luxury timepiece... Offered at Rock Bottom Prices!!

[#4]

Take a look here.

[#5]

No individual email, just several service status messages saying the migration to Postini was progressing over the past few weeks.