To avoid being an open relay please verify that "Use strict local relaying restrictions" is checked in MercuryS configuration / Connection control. See Mercury help for other options regarding SMTP relaying. (Relaying is switched off by default.)

/Rolf 

I found this "action" in my Mercury SMTP.

For me it looks like a "test" if my Server can be used for a spam attack if somebody wants to do it.

Now I have a Question. Can I make a setting that allows my mailsserver not to send more than 10 Mails per hour. This could may be a good option to prevent my server to be a mass-mail sender for spam.

the 10 mails per hour would not disturb me.

thanks for ideas

Schorsch