550 relay prohibited

[Lindahg]

I just started using outlook 2007 I was able to get emails from all of my
friends and family now I receive this message that the system administer
would not send these emails.
I worked just fine 3 weeks ago when I first started send to my grand
children and my kids now they are all being prohibited.

 

[Vince Averello]

Have you changed anything in your setup? Normally that message means that
you're using an SMTP (outgoing mail) server that isn't on the same
network/ISP as you. Are you connecting wirelessly? Perhaps you may be
connected to a neighbor's network by mistake...

 

[Tom [Pepper] Willett]

....and, the ISP may have recently changed authentication requirements.

: Have you changed anything in your setup? Normally that message means that
: you're using an SMTP (outgoing mail) server that isn't on the same
: network/ISP as you. Are you connecting wirelessly? Perhaps you may be
: connected to a neighbor's network by mistake...
:
: : > I just started using outlook 2007 I was able to get emails from all of
my
: > friends and family now I receive this message that the system administer
: > would not send these emails.
: > I worked just fine 3 weeks ago when I first started send to my grand
: > children and my kids now they are all being prohibited.
: