[Dovecot] Dovecot 2.2.4/sendmail with sql user and aliases

[Axel Luttgens]

Le 22 juil. 2013 à 19:31, Cedric a écrit :

> Hi,
> 
> There's the information again :
> 
> I use sendmail with dovecot-lda delivery :
> 
> Mvirtual,       P=/vdl/libexec/dovecot/dovecot-lda, F=lsDFMShP, S=10, R=20/40,
>                A=/vdl/libexec/dovecot/dovecot-lda -d $u@$h

Ha... So, there are still people using Sendmail for new installations. ;-)
Sorry, I don't know why I have thought about postfix.
My memories about Sendmail are very, very tiny, so I'll assume the above is correct (doesn't seem too audacious, given the lines with "to=test at mail.vdl ... mailer=virtual" written by Sendmail in the log).

Please find hereafter my quick interpretation of what's happening when sending a message to "test at mail.vdl" (note that the same description should apply for a message to "cedrict at mail.vdl" as well).


> The current query :
> 
> user_query = SELECT \
>               s_courriel_utilisateur.utilisateur as user, \

According to the query output you provide below, you are replacing here "test at mail.vdl" by "cedrict at mail.vdl"


>               s_courriel_utilisateur.utilisateur as username, \

and here "test" by "cedrict"


>               s_courriel_domaine.nom as domain, \

and here "mail.vdl" by NULL?
Or something like that.
Anyway, those substitutions should explain the "username changed test at mail.vdl -> cedrict" and "cedrict -> cedrict at mail.vdl" infos in the log.
The problem is, the effect of such substitutions isn't really defined in a user_query: at best they don't do anything, at worse they may lead to strange interpretations of %n, %u, %d in doevecot.conf.


> concat("/vhome/",s_courriel_domaine.nom,"/home/",s_courriel_utilisateur.utilisateur) as home, \
> concat("/vhome/",s_courriel_domaine.nom,"/home/",s_courriel_utilisateur.utilisateur,"/mail/index") as "index", \
> concat("/vhome/",s_courriel_domaine.nom,"/home/",s_courriel_utilisateur.utilisateur,"/mail/control") as control, \
> concat("/var/spool/vmail/",s_courriel_domaine.nom,"/",s_courriel_utilisateur.utilisateur) as inbox, \

Not sure, but I think you are trying to split into three pieces (index, control, inbox) what Dovecot expects to be returned as a single column "mail" (which, when not NULL, overrides mail_location) from a user_query.


>               "maildir++" as layout, \

Is this OK in the context of a user_query?


>               s_courriel_utilisateur.uid as uid,s_courriel_domaine.gid as gid \
>   FROM  s_courriel_utilisateur left join s_courriel_alias on s_courriel_utilisateur.id=s_courriel_alias.utilisateur and s_courriel_alias.archive !=1 ,s_courriel_domaine \
>   WHERE s_courriel_utilisateur.archive !=1 \
>         and s_courriel_domaine.archive !=1 \
>         and s_courriel_utilisateur.domaine=s_courriel_domaine.id \
>         and s_courriel_domaine.nom = '%Ld' \
>         and ( s_courriel_utilisateur.utilisateur = '%Ln' or s_courriel_alias.alias  = '%Ln' )
> 
> 
> The query, including the output :
> 
> 
> [...]
> *************************** 1. row ***************************
>    user: cedrict at mail.vdl
> username: cedrict
>    home: /vhome/mail.vdl/home/cedrict
>   index: /vhome/mail.vdl/home/cedrict/mail/index
> control: /vhome/mail.vdl/home/cedrict/mail/control
>   inbox: /var/spool/vmail/mail.vdl/cedrict
>  layout: maildir++
>     uid: 60001
> 
> The dovecot log , you can see dovecot lda deliver the message to inbox=/var/spool/vmail/mail.vdl/test and not inbox=/var/spool/vmail/mail.vdl/cedrict
> 
> [root at devshed vdl]# Jul 22 13:29:47 devshed sendmail[32409]: dangerous permissions=40777 on queue directory /var/spool/clientmqueue/
> [...]
> Jul 22 13:29:47 devshed dovecot: auth: Debug: master in: USER 1       test at mail.vdl   service=lda
> [...]
> Jul 22 13:29:47 devshed dovecot: auth-worker(32406): Debug: auth(test at mail.vdl): username changed test at mail.vdl -> cedrict
> Jul 22 13:29:47 devshed dovecot: auth-worker(32406): Debug: auth(cedrict): username changed cedrict -> cedrict at mail.vdl
> Jul 22 13:29:47 devshed dovecot: auth: Debug: userdb out: USER 1       test at mail.vdl   home=/vhome/mail.vdl/home/cedrict index=/vhome/mail.vdl/home/cedrict/mail/index control=/vhome/mail.vdl/home/cedrict/mail/control inbox=/var/spool/vmail/mail.vdl/cedrict layout=maildir++ uid=60001       gid=231
> Jul 22 13:29:47 devshed dovecot: lda: Debug: auth input: test at mail.vdl home=/vhome/mail.vdl/home/cedrict index=/vhome/mail.vdl/home/cedrict/mail/index control=/vhome/mail.vdl/home/cedrict/mail/control inbox=/var/spool/vmail/mail.vdl/cedrict layout=maildir++ uid=60001 gid=231
> Jul 22 13:29:47 devshed dovecot: lda: Debug: Added userdb setting: plugin/control=/vhome/mail.vdl/home/cedrict/mail/control
> Jul 22 13:29:47 devshed dovecot: lda: Debug: Added userdb setting: plugin/inbox=/var/spool/vmail/mail.vdl/cedrict
> Jul 22 13:29:47 devshed dovecot: lda: Debug: Added userdb setting: plugin/index=/vhome/mail.vdl/home/cedrict/mail/index
> Jul 22 13:29:47 devshed dovecot: lda: Debug: Added userdb setting: plugin/layout=maildir++

Note here "plugin/control", "plugin/inbox", "plugin/index" and "plugin/layout": considered as unknown settings and placed into plugin sections.


> Jul 22 13:29:47 devshed dovecot: lda(test at mail.vdl): Debug: Effective uid=60001, gid=231, home=/vhome/mail.vdl/home/cedrict
> Jul 22 13:29:47 devshed dovecot: lda(test at mail.vdl): Debug: quota: No quota setting - plugin disabled
> Jul 22 13:29:47 devshed dovecot: lda(test at mail.vdl): Debug: maildir++: root=/vhome/mail.vdl/home/cedrict/mail, index=, indexpvt=, control=/vhome/mail.vdl/home/cedrict/mail/control, inbox=/var/spool/vmail/mail.vdl/test, alt=

The home directory is thus the one provided without ambiguity by the user_query.
See below for the control and the inbox.


> Jul 22 13:29:47 devshed dovecot: lda(test at mail.vdl): Debug: quota: No quota setting - plugin disabled
> Jul 22 13:29:47 devshed dovecot: lda(test at mail.vdl): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt=
> Jul 22 13:29:47 devshed dovecot: lda(test at mail.vdl): Debug: Destination address: test at mail.vdl (source: user at hostname)

Dovecot is now a bit lost and seems to revert to "reasonable" guesses: the domain seems to have been lost (hence the hostname), but the original user ("test") is still at hand.

So, there was still a way to find out something, with the help of that line in dovecot.conf:

	mail_location =  mbox:%h/mail:LAYOUT=maildir++:INDEX=MEMORY:CONTROL=%h/mail/control:INBOX=/var/spool/vmail/%d/%n


> [...]
> 
> Thank in advance.

HTH,
Axel