On 3/14/2012 6:38 AM, Charles Marcus wrote: > On 2012-03-12 12:18 PM, Viktor Dukhovni <postfix-us...@dukhovni.org> wrote: >> On Mon, Mar 12, 2012 at 12:10:30PM -0400, Charles Marcus wrote: >>> relay=outbounds6.obsmtp.com[64.18.5.12]:25, delay=1, >>> delays=0.65/0.01/0.27/0.07, dsn=5.0.0, status=bounced (host >>> outbounds6.obsmtp.com[64.18.5.12] said: 518 Sender not authorized >>> from this ip - psmtp (in reply to MAIL FROM command)) >> >> There's nothing you can do, don't forward mail to these domains, >> they no longer wish to receive such mail. >> >> You are perhaps expected to implement SRS, ... but I would not >> bother. > > It turns out it is simply that when you are using postini, and use them > for outbound relay/filtering as well, they expect the 'From' address to > be from our domain... this is just stupid. They require me to add their > netblock to mynetworks (which obviously means I must absolutely and > unequivocally trust *their* servers), but they don't return the favor. > > So... now the question is, can I do some kind of sender rewriting magic > to get forwarding working again?
The real question is: Why are you bothering to use Postini for outbound delivery, given these problems, instead of continuing to send direct to MX? -- Stan
