On 1/21/2015 9:53 AM, rogt3...@proinbox.com wrote: > > Extract the list from each server, aggregate them into a single list, clean > it up, rsync it over to the Postfix box, and convert it to an LMDB list.
Yes, a manual transfer is OK for a short term project. Once you establish the procedure, it shouldn't be too hard to automate, even on Windows. > > The 'Recipient address verification' stuff I'd seen but wasn't sure exactly > what the Postfix was "doing to" the SMTP servers downstream. IIUC, something > like -- it sends a test message to the upstream, and then stores in > LOCAL-to-Postfix, persistent cache whether that's a good/bad address. > > Sounds like it only does that ONCE per address, but not sure. I don't wnat > to make the current downstream servers "angry" for invalid > recipients/senders, and mistakenly lock out the upstream postfix. I know I > can make those changes in the downstream's config -- somewhere. Need to > understnad this more. the docs: http://www.postfix.org/ADDRESS_VERIFICATION_README.html#how Results are stored in a persistent database. There are controls for how long an address is considered good or bad and how often a probe is sent, all with reasonable defaults. You can browse the settings by looking at http://www.postfix.org/postconf.5.html and find the various parameters that start with "address_verify_", and referring to ADDRESS_VERIFICATION_README Of course, automatic address verification depends on the target server correctly responding to unknown recipients. >>> (2) the Postfix system storing, then later forwarding, inbound mail if the >>> Postfix -> domainX connection is ever down >>> (3) the Postfix system storing, then later sending, outbound mail if the >>> Postfix -> 'net connection is ever down >> >> both these are default behavior. > > I've read about Queing. I thought it might be safe enough. Wasn't sure what > happens if the server's restarted, whether the Queued emails -- in either > direction -- survive. I think they do as they're written to disk in the > Queue directory and Postfix on restart simply looks there and puts them back > in line to be processed when possible. > Barring data-loss system failures, the queue should be very safe across postfix and server restarts. This is hard-coded behavior and isn't user-configurable (unless you do something silly such as put the queue on a ramdisk -- no warranty for that). -- Noel Jones
