Hi Mark, Am 11.09.2014 um 22:59 schrieb L. Mark Stone: > Any chance there is a UTM device in the email stream? Possible, but I wouldn't know. This is a rented rootserver in some data center. I don't know their topology, and they probably wouldn't tell me even if I asked.
> We see lots of these errors when our SonicWalls do an RBL lookup, don't like > the data in the email stream etc. The SonicWalls then just drop the > connection and Postfix logs the drop. I'll contact support and ask, that won't hurt. Regards, Sean
