I wrapped the LDA command in a script. I can see that Postfix passes "@@mydomain.tld" as the -d argument, without quotes. I then adapted the script to specifically replace this address with "@"@mydomain.tld, but this results in the following error message by Dovecot:
auth: Info: userdb(?): Username character disallowed by auth_username_chars: 0x22 (username: "@"@mydomain.tld) So what would be the appropriate quoting/setting for this address? Kind regards, Philipp Am 06-Mar-18 um 15:08 schrieb Stephan Bosch: > > > Op 6-3-2018 om 14:34 schreef Philipp Berger: >> I upgraded to Dovecot 2.3.0.1 as advised, but it still seems broken. In >> the Postfix log I now see: >> >> Mar 6 13:49:03 myhost amavis[7165]: (07165-10) K00VtLRHdrYw FWD from >> <[email protected]> -> <"@"@mydomain.tld>, BODY=7BIT 250 2.0.0 from >> MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as B8CA22DA1B37 >> Mar 6 13:49:03 myhost amavis[7165]: (07165-10) Passed CLEAN >> {RelayedInbound}, [someIp]:11439 [someIp] <[email protected]> -> >> <"@"@mydomain.tld>, Queue-ID: D27792DA167C, Message-ID: >> <[email protected]>, mail_id: >> K00VtLRHdrYw, Hits: -3, size: 7472, queued_as: B8CA22DA1B37, 1863 ms >> Mar 6 13:49:03 myhost postfix/smtp[2329]: D27792DA167C: >> to=<@@mydomain.tld>, relay=127.0.0.1[127.0.0.1]:10024, delay=2, >> delays=0.15/0.01/0/1.9, dsn=2.0.0, status=sent (250 2.0.0 from >> MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as B8CA22DA1B37) >> Mar 6 13:49:03 myhost postfix/pipe[2282]: B8CA22DA1B37: >> to=<@@mydomain.tld>, relay=dovecot, delay=0.2, delays=0.11/0/0/0.09, >> dsn=5.1.1, status=bounced (user unknown) >> Mar 6 13:49:03 myhost postfix/cleanup[2280]: EA37E2DA1F80: >> message-id=<[email protected]> >> Mar 6 13:49:04 myhost postfix/bounce[2334]: B8CA22DA1B37: sender >> non-delivery notification: EA37E2DA1F80 >> Mar 6 13:49:04 myhost postfix/qmgr[21911]: EA37E2DA1F80: from=<>, >> size=9830, nrcpt=1 (queue active) >> Mar 6 13:49:04 myhost postfix/qmgr[21911]: B8CA22DA1B37: removed >> Mar 6 13:49:04 myhost postfix/pipe[2282]: EA37E2DA1F80: >> to=<[email protected]>, relay=dovecot, delay=0.07, >> delays=0.05/0/0/0.02, dsn=5.3.0, status=bounced (command line usage >> error. Command output: lda: Fatal: Invalid -f parameter: Missing >> domain ) >> >> I can see in my MySQL Log that Dovecot queried at the same time with %n >> = "" (empty) and %d = "@mydomain.tld". So now the "@" is dropped >> entirely. >> >> What does the "Fatal: Invalid -f parameter: Missing domain" tell us? Do >> I need to change the way Postfix calls Dovecot? Add more quotes? :D > > Can you check what Postfix is feeding to Dovecot exactly (i.e., > whether it is properly escaped)? Maybe wrap dovecot-lda in some shell > script and see what is passed. > > Regards, > > Stephan. > >> >> Kind regards, >> Philipp >> >> Am 04-Mar-18 um 21:12 schrieb Stephan Bosch: >>> Op 3/1/2018 om 2:07 PM schreef Philipp Berger: >>>> Dear all, >>>> >>>> I have a working setup with Postfix + Dovecot, storing users in a >>>> MySQL >>>> table. >>>> >>>> I ran into problems setting up and using a mail address like >>>> a"@"[email protected], which by RFC should be valid, but leads to >>>> problems >>>> in Dovecot. From my debugging, I can see that on the lookup, Dovecot >>>> replaces %n with "a" (quotes added by me) and %d with "[email protected]" >>>> (quotes added by me). So the original quotes are gone, and the >>>> domain/user split is incorrect. >>>> >>>> I am not sure of Postfix passes the address without quotes to >>>> Dovecot or >>>> whether Dovecot can not handle quotes correctly, but I was hoping that >>>> someone with more insight into Dovecot could help me out here. >>>> >>>> System Info: Debian 9, Postifx 3.1.6-0+deb9u1, Dovecot 2.2.27-3+deb9u1 >>>> Postfix master.cf for Dovecot: >>>> dovecot unix - n n - - pipe >>>> flags=DRhu user=virtual:virtual >>>> argv=/usr/lib/dovecot/dovecot-lda -f >>>> ${sender} -d ${user}@${nexthop} >>>> >>>> I am grateful for any hints :) >>>> >>>> Thank you in advance, kind regards, >>> Yeah, Dovecot v2.2 is doing some funky stuff with SMTP address parsing. >>> Dovecot v2.3 should do a better job. I am still not sure if this can be >>> fixed well for Dovecot v2.2. >>> >>> Regards, >>> >>> Stephan. >> >> >
