On Saturday, March 15, 2003 3:37 PM [GMT+0530=IST],
Florian Weimer <fw@???> wrote:
> Some people use the 554 greeting to indicate "no mail under this
> domain", some to say "please try the next MX".
... and if you extend that principle to thinking "most people mean this"
then you are likely to wind up blocked, very fast.
If you get 5xx like that - contact somebody in the place and work things
out first, before you retry 5xx'd mail.
srs