On Sun, Mar 16, 2014 at 9:43 AM, Noel Jones <njo...@megan.vbhcs.org> wrote: > On 3/16/2014 8:31 AM, Rick Zeman wrote: >> On Sat, Mar 15, 2014 at 11:34 PM, Noel Jones <njo...@megan.vbhcs.org> wrote: >>> On 3/15/2014 5:08 PM, Rick Zeman wrote: >>>> I've started working on my bastard Mac postfix relay. For delivery to >>>> the local domain, it will only relay to the internal mail server >>>> defined in transport if the user exists locally on the postfix >>> >>> When relaying to an inside server, the domain should be specified in >>> relay_domains, not mydestination. >>> >>> Valid recipients should be listed in relay_recipient_maps. >>> >>> You can override the users to be delivered locally by using a >>> transport_maps entry pointing those users to the local: delivery >>> transport. >>> >>> http://www.postfix.org/ADDRESS_CLASS_README.html >>> http://www.postfix.org/BASIC_CONFIGURATION_README.html >>> http://www.postfix.org/STANDARD_CONFIGURATION_README.html >>> >>> >>> And turn off the debug logging -- it's rarely useful for any but the >>> most obscure errors, and the big errors get lost in the noise. >>> >> >> Oy. Got it, thanks. One last question. I have recipient_delimiters >> = - and also reject_unverified_recipient in the smtpd recipient >> restrictions. It looks like postfix (on my system, at least) does the >> smtp probe to the destination before the re-write of user-foo@ to >> user@ so it's effectively useless. Are they mutually exclusive, or is >> there a way to force the rewrite to happen before the probe? I didn't >> see anything under either common in the docs that addressed this >> scenario. >> > > Postfix does not rewrite user-...@example.com to u...@example.com. > Rather, postfix will use "fake" lookups of u...@example.com for > select table lookups as documented elsewhere, and carefully preserve > the -foo extension during delivery. > > Recipient address verification probes are always sent using the > exact address as supplied by the client. If the remote system > doesn't accept user-foo@ as a valid address then the probe will > fail, as it should. > > If you need to strip the address extension, you could use > smtp_generic_maps to remove the extension during delivery.
The reading that I just did (generic, canonical) suggests that using a canonical table so cleanup(8) will rewrite the address before the inbound mail is queued vs generic_maps which would rewrite after it's queued. Is that the only fundamental difference? In reading both doc pages, however, I really didn't see any examples that would remap user-...@example.com to u...@example.com. Nor could I find a good example by googling.
