At 14:21 09/08/2004 Wednesday, Tabariasl, Hamid wrote: >Does anyone know what the above error message is pointing to? Sounds like an anti-spam technique from subscribers' site [log in to unmask]" target="_blank">http:[log in to unmask] http://www.google.com/search?q=%22552%205.5.3%20Too%20many%20recipients%22 see also ftp://ftp.isi.edu/in-notes/rfc1893.txt and scroll to x.5.3