VODACOM4 ISO Standby: What does this mean?!?

[IamIvanPta]

Hi Guys,

jst got an sms from:
VODACOM4
ISO Standby:
[email protected] is now on standby. please contact
ISOC on 021 440 8932 for any queries. ISO Standby
Roster: http://psis101zatcwi.vodacom.corp/

What the heck does this mean??? I didnt click on anything, caution of RAT.

But does anyone else know what this means??

Thanks,
Ivan