DELIVERY FAILURE: User akan.nyman (akan.nyman at nvso.sll.se) not listed in public Name & Address Book

[Erik P. Skaalerud]

Postmaster at xxxxxxxxxxx wrote:
Your message

  Subject: Re: Hi

was not delivered to:

  akan.nyman at xxxxxxxxxxx

because:

  User akan.nyman (akan.nyman at xxxxxxxxxxx) not listed in public Name & Address Book
[blabla]

Matt, wouldnt it be wise to block all incoming mails with the patern 
hostmaster@* ?

- Erik