Warning - new trend of attempts to infect ISP users (possibly virus)

["william(at)elan.net" <william () elan net>]

I have just seen emails (several different kinds) pretending to be sent 
from 3 of my isp domains to users of those domains warning users that 
their email account would be disabled and asking to open a .pif attachment.
I know largest ISPs probably have expierenced this but I believe what I 
have seen today means they are after ISPs (or possibly just after any 
domains with number of email addresses under them) of all sizes right at 
the moment. All emails we received from the same source ip - 129.59.206.187
Please check your email base for what looks like the following
(in the examples I changed everything to elan.net, actually every isp 
domain received different example of this, only first one is exact).

Example 1:
---
From: management () elan net 
To: xxxxx () elan net
Subject: Email account utilization warning.

Hello  user  of Elan.net e-mail server,

Your e-mail account has  been temporary disabled  because  of unauthorized
access.

For further details see the  attach.

Best wishes,
   The Elan.net team                               http://www.elan.net
---

Example 2:
---
From: administration () elan net
To: xxxx () elan net
Subject: Warning about your e-mail account.

Dear user of "Elan.net" mailing system,

Our main mailing server  will be temporary  unavaible  for next two days,
to  continue receiving mail in these  days you  have  to  configure  our 
free auto-forwarding service.

Further details  can be  obtained  from attached  file.

Cheers,
   The Elan.net team                             http://www.elan.net
---

Example3:
---
To: xxxxx () elan net
Subject: Warning about your e-mail account.
From: administration () elan net

Dear user, the management of Elan.net mailing system wants to let you 
know that,

Some of our clients complained  about the spam (negative e-mail content)
outgoing from your e-mail account. Probably, you have been  infected by
a  proxy-relay trojan  server. In order to keep  your  computer safe,
follow the instructions.

Please, read  the attach for further details.

The Management,
     The  Elan.net team                             http://www.elan.net