Am Mi, den 27.10.2004 schrieb Yang Xiao um 21:24: > I'm trying to prevent anyone from spoofing incoming mail as internal > users. Example, my domain is mydomain.com > I don't want to anyone to connection to my mail gateway and send > emails as user@xxxxxxxxxxxx from the outside. > > I thought this can be done by access table and it's working. but the > problem now is that it's rejecting local mail that it's trying to > forward to the mailhost as well, how can I fix this? No, you can't prevent this sender address spoofing with the access_db without breaking other regular mail traffic. > #access table > 127.0.0.1 OK > localhost OK > From:localhost OK > To:localhost OK Above must be RELAY, OK is too less. > From:mydomain.com ERROR:"550 Everything that has a > beginning, has an end." > Yang http://www.sendmail.org/~ca/email/protected.html Or use a milter application to check whether the sender which claims to have a local domain address is sending from internally. Alexander -- Alexander Dalloz | Enger, Germany | GPG key 1024D/ED695653 1999-07-13 Fedora GNU/Linux Core 2 (Tettnang) kernel 2.6.8-1.521smp Serendipity 21:35:53 up 7 days, 18:15, load average: 0.26, 0.19, 0.23
Attachment:
signature.asc
Description: Dies ist ein digital signierter Nachrichtenteil
