On Wed, May 21, 2008 at 9:48 AM, carlopmart <carlopmart at gmail.com> wrote: > <user at domain2.com>: delivery via localhost[127.0.0.1]:10025: 250 2.0.0 Ok: > queued as D61DDEC962 > content_filter = imss:localhost:10025 Did you check if this could be related to whatever is running on port 10025? How is your master.cf setup? Filipe