LDA-based vacation responses bouncing

Tue May 14 21:11:17 EEST 2019

I've got dovecot vacataion auto-responses working via sieve, but when
the responses are sent, they are sent as if they are to be locally
delivered, which causes them to bounce for domains that I am not local
for. How can I get dovecot's sieve vacation response to check the domain
is local or not?

Here is an example of what happens:

The LDA notices it needs to send a vacation response:
2019-05-14T10:50:47.827466-07:00 brant dovecot: lda(user at example.org)<14817><xL6LL/f/2lzhOQAAh856Uw>: sieve: msgid=<20190514135045.012486 at localhost>: sent vacation response to <someone at somewhere.org>

but that response was sent via the postfix pipe through the dovecot lda
transport... because that is local, and the domain it is sending to is
not local, it bounces:

2019-05-14T10:50:47.923333-07:00 brant postfix/pipe[14821]: C998381539: to=<someone at somewhere.org>, relay=dovecot, delay=0.11, delays=0.04/0.01/0/0.06, dsn=5.1.1, status=bounced (user unknown)

Postfix is set to do this:

dovecot  unix    -       n       n       -      -       pipe
  flags=DRhu user=mail argv=/usr/bin/spamc --connect-retries=1 -H -d 10.0.1.92 -s 10240000 -t 100 -u ${recipient} -e /usr/lib/dovecot/dovecot-lda -f ${sender} -d ${recipient}

require ["fileinto", "vacation"];
vacation
  :days 2
  :subject "Helllo"
"Hi";

Here is my doveconf -n:

# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.4 ()
# OS: Linux 4.9.0-8-amd64 x86_64 Debian 9.8 
auth_worker_max_count = 120
default_client_limit = 6144
default_process_limit = 256
default_vsz_limit = 512 M
dict {
  expire = mysql:/etc/dovecot/dovecot-dict-sql.conf
  quota = mysql:/etc/dovecot/dovecot-dict-sql.conf
}
disable_plaintext_auth = no
first_valid_gid = 8
first_valid_uid = 8
last_valid_gid = 8
last_valid_uid = 8
listen = *
login_greeting = howdy, ready.
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c %k
mail_location = mdbox:~/mdbox
mail_plugins = expire quota zlib
maildir_very_dirty_syncs = yes
namespace {
  inbox = yes
  location = 
  prefix = 
  separator = .
}
namespace {
  alias_for = 
  hidden = yes
  inbox = no
  list = no
  location = 
  prefix = INBOX.
  separator = .
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf
  driver = sql
}
plugin {
  expire = Trash
  expire2 = Trash/*
  expire3 = Spam
  expire_dict = proxy::expire
  quota = dict:Your mail quota::proxy::quota
  quota_rule = *:bytes=100663296
  quota_rule2 = Trash:bytes=+20%%
  quota_rule3 = Spam:bytes=+10%%
  quota_rule4 = INBOX.Trash:bytes=+20%%
  quota_rule5 = INBOX.Spam:bytes=+10%%
  quota_rule6 = INBOX.restored_from_backups:bytes=+500%%
  sieve = ~/.dovecot.sieve
  sieve_after = /var/lib/dovecot/sieve/after.sieve
  sieve_before = /var/lib/dovecot/sieve/default.sieve
  sieve_dir = ~/sieve
  zlib_save = gz
  zlib_save_level = 6
}
protocols = " imap pop3"
service anvil {
  unix_listener anvil {
    group = dovecot
    mode = 0660
    user = root
  }
}
service auth {
  client_limit = 6144
  unix_listener auth-userdb {
    group = mail
    mode = 0600
    user = mail
  }
}
service dict {
  unix_listener dict {
    group = mail
    mode = 0600
    user = mail
  }
}
service imap-login {
  process_min_avail = 10
  service_count = 0
  vsz_limit = 512 M
}
service imap-postlogin {
  executable = script-login /usr/local/sbin/postlogin_imap
}
service imap {
  executable = imap imap-postlogin
  process_limit = 6144
}
service pop3-login {
  process_min_avail = 10
  service_count = 0
  vsz_limit = 512 M
}
service pop3-postlogin {
  executable = script-login /usr/local/sbin/postlogin_pop
}
service pop3 {
  executable = pop3 pop3-postlogin
}
service stats {
  unix_listener stats-writer {
    group = mail
    mode = 0660
  }
}
ssl_cert = </etc/certs/wildcard/cert.pem
ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
userdb {
  args = /etc/dovecot/dovecot-sql.conf
  driver = sql
}
verbose_proctitle = yes
verbose_ssl = yes
protocol lda {
  mail_plugins = expire quota trees zlib sieve
  plugin {
    quota_exceeded_message = Sorry, your message cannot be delivered to that person because their mailbox is full. If you can contact them another way, you may wish to tell them of this problem.
    quota_rule7 = INBOX:bytes=+10%%
  }
}
protocol imap {
  imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
  mail_plugins = expire quota trees zlib imap_quota imap_zlib
  plugin {
    quota_exceeded_message = You are over quota. To avoid losing mail, immediately empty your Trash and Sent folders and delete emails with large attachments.
  }
}
protocol pop3 {
  mail_plugins = expire quota trees zlib
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
  pop3_uidl_format = %g
}
remote 127.0.0.1 {
  mail_max_userip_connections = 60
}

Thanks for any suggestions,
micah