They initially used just one From: and Reply-To: header:
Aspire Systems was initally (see Update below) of no help in stopping
this spam emanating from their SMTP server. They are at least partly
responsible for this spam; they forwarded one of my email messages to
firstname.lastname@example.org. (It bounced due to "File
The techcello.net, techcello.com, saasguideline.com, and enablesaas.com domains are registered to Asteor Corporation.
Update, August 2010: I finally did reach someone at
Aspire Systems who was able to stop the spam to me. I have since
heard from others who have been spammed by Techcello, so they're still
at it. And email to
Update, September 2012: I am STILL getting spam from Aspire Systems. Their spam is not compliant with the U.S. CAN-SPAM Act, either. And their WHOIS information has an incorrect phone number.
Update, June 2012: I received another spam from Techcello..com.
Update, October 2013: I received another spam from Techcello..com. It was sent from an SMTP server named mail.cellodevelopers.net; the Internet address of that server (18.104.22.168) is allocated to Aspire Systems.
Update, October 2014: I received a spam from Christy Reed <email@example.com>. Update, April 2015: I received a spam from Linda John <firstname.lastname@example.org>.