My server is spamming through VBGallery 2.51. I am 100% sure that this is the case. Let me explain all that has gone on to prove this.
I was on another server that I have since left and move this site to a new server. The only site hosted on this server is the one I am referring to now. The reason I left was partly because of this spamming going on that is was sending out.
If I go into my ADMINCP plugins and turn off the VBGallery plugin then the spamming stops.
If I turn it back on it starts back up in a day or two. I have left the plugin turned off for almost two weeks and the server never sent out any spam. But as soon as it gets turned back on the spam starts getting sent out from my server again.
Here is another link that help me isolate it down to VBGallery. There is another user by thew name of beishe8 that also brings up that he had this same problem and how he narrowed it down to Photopost vBGallery misc.php. You can find his results on page two of this thread. https://www.vbulletin.com/forum/show...mail-log/page2
Chuck can you verify this and put out a fix for it ASAP?