On 2/24/2012 3:40 PM, Wietse Venema wrote: > Robert Fitzpatrick: >> On 2/24/2012 2:44 PM, Wietse Venema wrote: >>> Robert Fitzpatrick: >>>> (maybe more) domain. I see the following message for this unknown user >>>> where AV seems to be working, I only cache positives.... >>> ... >>>> Feb 24 08:33:55 mx1 postfix/smtp[6812]: 8024C2E2BD: >>>> to=<tmia...@example.com>, relay=x.x.x.x[x.x.x.x]:25, delay=10, >>>> delays=0.01/0.01/5.1/5, dsn=5.1.1, status=undeliverable >>>> (host x.x.x.x[x.x.x.x] said: 550 5.1.1 User unknown (in reply to RCPT TO >>>> command)) >>>> Feb 24 08:34:00 mx1 postfix/qmgr[73990]: 8024C2E2BD: removed >>>> >>>> But unlike other domains that we transport for, I do not see the NOQUEUE >>>> reject log entries for this user address, I do see the deliveries for >>> >>> If you don't save the probe result, then the result is thrown away. >>> Telepathic computing is not yet commercially available. >>> >> >> Thanks, yes, I understand why it is doing AV. What I don't understand is >> how come another message to the same recipient around the same time gets >> delivered to localhost for scanning. > > Your configuration throws away negative probe results. > Therefore, negative probe results never block mail. >
That is the part I didn't understand. What exactly triggers the other rejections I see with NOQUEUE? I thought each message would be rejected as an unverified address if not found in the verify db. And telling Postfix not to keep negative probes only meant that the downstream server would be probed every time an address is seen. Thanks again, I really appreciate you helping me get my head around how this works.
