Hi. I'm running SuSE 6.4 and need to run sendmail (host permanently connected to Internet). By default, SM 8.9.3 comes with relay denied for all. I want to set an acceptable secure sendmail. The scenario is as follows: - the smtp (mta) is aaa.bbbb.com (where aaa & bbbb are ficticious). I want the rely denied by default but also want granted access for users whom From:'s field is: *@bbbb.com and *@cccc.com (being cccc.com another domain which is NOT local to the machine; bbbb.com is the "local" domain, I mean, there is a MX record pointing to the mta's ip.). The problem is that my users can connect to the smtp machine from *ANY* ip. So the rely-filters only could trust in the "From:" line in header's mail. I know this isn't too much secure, since spammers could send mail spoofing the From: field (which is trivial). But it's more secure than a sendmail running with "promiscuos relay" feature turned on. I'm new to sendmail so I need some help. I've read some docs at www.sendmail.org and have a look to O'Reilly sendmail book. But it still doesn't working. These are the attempts I've made: 1) Using Yast, I created a /etc/sendmail.cf. Then I personalized a little using Yast too and added the domain: bbbb.com and ddd.bbbb.com (which is an alias to aaa.bbbb.com). Afterwards I modified /etc/mail/access and added: cccc.com RELY Finally: # makemap hash /etc/mail/access < /etc/mail/access # /sbin/init.d/sendmail reload (or killall -HUP sendmail) The result is that now I can send to recipients like: user@cccc.com. But this isn't the behaviour I want. What I want is that user@cccc.com can send (not be sent to) to any other recipient (at whatever domain) using my mta. 2) 2nd attempt: this time I edited /etc/mail/linux.mc and added a line: FEATURE(`relay_local_from') Compiled using: # m4 /etc/mail/linux.mc > /etc/sendmail.cf And reload sendmail: # /sbin/init.d/sendmail reload (Access file kept intact). The result apparently is the same. I cannot send to any arbitrary domain from user@cccc.com. I'm quite desperated. What am I missing????? =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ** RoMaN SoFt / LLFB ** roman@madrid.com http://pagina.de/romansoft ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~