On Thu, Aug 10, 2006 at 06:13:07PM +0200, Rogier Krieger wrote: > On 8/10/06, Will H. Backman <[EMAIL PROTECTED]> wrote: > >Because I require TLS and SMTP-AUTH for relaying purposes, I'm in a > >bind. My real problem is getting Exchange to do SMTP-TLS on a different > >port, so this is really a non-openbsd issue. > > Perhaps you'd benefit from a solution of shielding your Exchange with > a more benign MTA (e.g. Postfix, sendmail) and add spamd into the mix > if you desire. > > For relaying, all you need is a way to validate the usernames. Using > the Exchange's LDAP repository as a lookup table for Postfix or > exporting valid users and their passwords to a Postfix lookup table > (file), you could get around your Exchange configuration issue. > > In the "smtp-proxy" [1] thread earlier this week, at least two people > pointed to the Book of Postfix that contains an example (yes, this is > somehwat of a dij`-vu).
> References: > 1. MARC openbsd-misc archive: "Re: smtp proxy" > http://marc.theaimsgroup.com/?l=openbsd-misc&m=115512550405839&w=2 Note that at least Postfix has an independent greylisting implementation (postgrey); I'm fairly sure it's not the only one, and also fairly sure that there is a piece of code matching /milter/ and /grey/ around. Both are likely to work with STARTTLS; spamd isn't going to do that. Joachim
