I have a dovecot installation I am building on a raspberry pi for a mail
server for the home.
I am almost there, everything bar one thing is working.
In simple terms dovecot is the authentication agent and the lda (using
lmtp) for postfix. My maildir mailboxed at at /var/mail - location and
accounts controlled by a small sqlite database.
the uid for these mailboxes are 10001 and up and are not mapped to any
account on the system. The sieve plugin is working and I have a default
script which works to archive outgoing mail, returned via postfix
sender_bcc_maps to user+saveout into a Sent subfolder organised by date.
postfix also uses milters, to do spf, and dkim checking - and most
importantly from this posts perspective passes all mail through dspam,
adding an X-DSPAM-Signature header as it passes through. I plan to use
another default sieve script to move mail based on the X-DPAM-Result
header to move messages to the users Junk folder (when I can get
antispam working).
I want to use the antispam plugin to pick up users moving mail in and
out of their Junk folder to train dspam.
I initially tried using antispam's dspam backend. However I could not
get it to work. I "think" the issue is that antispam is running with
uid 10001 when it does this, and dspam will not process the message
because it can't find this uid as a system user. But I am not sure.
The approach I am trying now, is use the pipe backend to send mail to
[email protected] or [email protected] - and via
postfix manipulations get that to call dspam as user dspam. If I run as
root and use sendmail -bv to check that it works I get a delivery report
that shows that it would indeed arrive at dspam
I have a file in /var/spool/dspam called group which has
dpsam:shared:*
In it so that all users share the same dictionary.
However, when I try to make this work with anitspam, I keep getting
failure, and I can't work out what is causing it. Maybe its again
because I am running with uid 10001 when calling sendmail but I don't know.
antispam config is
plugin {
antispam_debug_target = syslog
antispam_verbose_debug = 1
antispam_backend = pipe
antispam_signature = X-DSPAM-Signature
antispam_signature_missing = error
antispam_trash = Trash
antispam_spam = Junk
antispam_pipe_program=/usr/bin/sendmail
antispam_pipe_program_args=-f;[email protected]
[email protected]
[email protected]
}
And what appears in syslog as a result of moving a mail from my INBOX to
the Junk folder in thunderbird is ...
Mar 6 06:52:38 piserver imap: antispam: plugin initialising (2.0-notgit)
Mar 6 06:52:38 piserver imap: antispam: verbose debug enabled
Mar 6 06:52:38 piserver imap: antispam: "Junk" is exact match spam folder
Mar 6 06:52:38 piserver imap: antispam: no unsure folders
Mar 6 06:52:38 piserver imap: antispam: "Trash" is exact match trash folder
Mar 6 06:52:38 piserver imap: antispam: pipe backend spam arg[0] =
[email protected]
Mar 6 06:52:38 piserver imap: antispam: pipe backend ham arg[0] =
[email protected]
Mar 6 06:52:38 piserver imap: antispam: pipe backend program =
/usr/bin/sendmail
Mar 6 06:52:38 piserver imap: antispam: pipe backend program arg[0] = -f
Mar 6 06:52:38 piserver imap: antispam: pipe backend program arg[1] =
[email protected]
Mar 6 06:52:38 piserver imap: antispam: pipe backend tmpdir /tmp
Mar 6 06:54:11 piserver imap: antispam: mailbox_is_unsure(Junk): 0
Mar 6 06:54:11 piserver imap: antispam: mailbox_is_trash(INBOX): 0
Mar 6 06:54:11 piserver imap: antispam: mailbox_is_trash(Junk): 0
Mar 6 06:54:11 piserver imap: antispam: mail copy: from trash: 0, to
trash: 0
Mar 6 06:54:11 piserver imap: antispam: mailbox_is_spam(INBOX): 0
Mar 6 06:54:11 piserver imap: antispam: mailbox_is_spam(Junk): 1
Mar 6 06:54:11 piserver imap: antispam: mailbox_is_unsure(INBOX): 0
Mar 6 06:54:11 piserver imap: antispam: mail copy: src spam: 0, dst
spam: 1, src unsure: 0
Mar 6 06:54:11 piserver imap: antispam: running mailtrain backend
program /usr/bin/sendmail
Mar 6 06:54:11 piserver imap: antispam: running mailtrain backend
program /usr/bin/sendmail
Mar 6 06:54:11 piserver imap: antispam: running mailtrain backend
program parameter 1 -f
Mar 6 06:54:11 piserver imap: antispam: running mailtrain backend
program parameter 2 [email protected]
Mar 6 06:54:11 piserver imap: antispam: running mailtrain backend
program parameter 3 [email protected]
Mar 6 06:54:11 piserver imap: antispam: run program failed with exit code 1
At the same time there is nothing is /var/log/mail.log indicating
postfix has ever received any sendmail request.
I would prefer to use dpsam backend directly if someone can tell me how
to overcome the dspam rejection issues, but this alternative would also
work (if a bit more convoluted to get mail to the correct place) if I
could get antispam to call sendmail correctly.
