Re: relocated_maps feature causing backscatter - SOLVED

2011-12-15 Thread Pim Zandbergen
I found the problem by investigating the address verification traffic between Postfix and Exchange. I noticed Postfix was not verifying recent addresses at all so I figured Postfix must be caching verification results somewhere. Indeed, there is a /var/lib/verify_cache.db and it contained the

Re: relocated_maps feature causing backscatter

2011-12-13 Thread Pim Zandbergen
On 12/12/2011 8:32 PM, Wietse Venema wrote: What is the output of: postconf smtpd_reject_unlisted_recipient Reason I ask is that the "unlisted recipient" check also does the relocated check. Wietse It might also be relevant that I'm using recipient address verification against the Exc

Re: relocated_maps feature causing backscatter

2011-12-13 Thread Pim Zandbergen
What is the output of: postconf smtpd_reject_unlisted_recipient Reason I ask is that the "unlisted recipient" check also does the relocated check. smtpd_reject_unlisted_recipient = no I have to accept unlisted recipients as there are no local users. Everything is being relaid to an Exchange

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Wietse Venema
Wietse Venema: > Pim Zandbergen: > > On 12/12/2011 7:47 PM, Wietse Venema wrote: > > > Pim Zandbergen: > > >> I can now reproduce the bouncing. Out of 22 tested recipients in > > >> the relocated file, 7 consistently bounce, and 15 others consistently > > >> reject. > > > What do you mean by that:

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Wietse Venema
Pim Zandbergen: > On 12/12/2011 7:47 PM, Wietse Venema wrote: > > Pim Zandbergen: > >> I can now reproduce the bouncing. Out of 22 tested recipients in > >> the relocated file, 7 consistently bounce, and 15 others consistently > >> reject. > > What do you mean by that: you talked to the Postfix SMT

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Pim Zandbergen
On 12/12/2011 7:47 PM, Wietse Venema wrote: Pim Zandbergen: I can now reproduce the bouncing. Out of 22 tested recipients in the relocated file, 7 consistently bounce, and 15 others consistently reject. What do you mean by that: you talked to the Postfix SMTP daemon from one IP address, sent al

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Wietse Venema
Pim Zandbergen: > I can now reproduce the bouncing. Out of 22 tested recipients in > the relocated file, 7 consistently bounce, and 15 others consistently > reject. What do you mean by that: you talked to the Postfix SMTP daemon from one IP address, sent all 22 addresses in an RCPT TO command, and

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Pim Zandbergen
On 12/12/2011 4:48 PM, Wietse Venema wrote: The network-facing SMTP server is configured not to validate that recipient, for example, due to explicit whitelisting in an access map. The access map contains whitelisted IP addresses only. I can now reproduce the bouncing. Out of 22 tested recipie

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Wietse Venema
Pim Zandbergen: > /var/log/maillog-20111211:Dec 10 03:47:04 veldhoen postfix/smtpd[2891]: > AC3E9664A: client=unknown[186.43.37.99] > /var/log/maillog-20111211:Dec 10 03:47:05 veldhoen > postfix/cleanup[2895]: AC3E9664A: message-id=<0uiljy-wdj5a3...@anbid.com.br> > /var/log/maillog-20111211:Dec 1

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Pim Zandbergen
I can't yet reproduce a bounce; i'm still figuring out under what circumstances a bounce will happen. Just being a local user, like I suggested in my previous post is not enough. But here is an actual bounce sitting in my queue right now: -Queue ID- --

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Noel Jones
On 12/12/2011 6:49 AM, Pim Zandbergen wrote: > I'm using postfix 2.7.5. > > Some relocated messages are bounced, some are rejected. > > It looks like this is the rule: > > Messages to recipients that appear to be local users (through > winbind in my case) are bounced. > Messages to recipients th

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Pim Zandbergen
I'm using postfix 2.7.5. Some relocated messages are bounced, some are rejected. It looks like this is the rule: Messages to recipients that appear to be local users (through winbind in my case) are bounced. Messages to recipients that do not appear to be local are rejected. This may be rele

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Noel Jones
On 12/12/2011 5:38 AM, Pim Zandbergen wrote: > I recently started using the relocated_maps feature and now am > seeing some > bounce messages to forged addresses in the queue because of that. > > It looks like this feature is bouncing rather than rejecting mail. > How can I avoid this? > > Thanks

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Ralf Hildebrandt
* Ralf Hildebrandt : > * Pim Zandbergen : > > I recently started using the relocated_maps feature and now am seeing some > > bounce messages to forged addresses in the queue because of that. > > > > It looks like this feature is bouncing rather than rejecting mail. > > It's not. Eventually SOME

Re: relocated_maps feature causing backscatter

2011-12-12 Thread Ralf Hildebrandt
* Pim Zandbergen : > I recently started using the relocated_maps feature and now am seeing some > bounce messages to forged addresses in the queue because of that. > > It looks like this feature is bouncing rather than rejecting mail. It's not. -- Ralf Hildebrandt Geschäftsbereich IT | Abteil

relocated_maps feature causing backscatter

2011-12-12 Thread Pim Zandbergen
I recently started using the relocated_maps feature and now am seeing some bounce messages to forged addresses in the queue because of that. It looks like this feature is bouncing rather than rejecting mail. How can I avoid this? Thanks, Pim