Spamassassin can't determine user

[twv]

Recently a client added a domain to his account. When mail is sent through the domain, I notice lines like this in /var/log/maillog:

Oct 20 11:05:57 server1 spamd[31022]: spamd: server successfully spawned child process, pid 13858
Oct 20 11:05:57 server1 spamd[31022]: prefork: adjust: 0 idle children less than 1 minimum idle children. Increasing spamd children: 13858 started.
Oct 20 11:05:57 server1 spamd[13858]: spamd: connection from localhost.localdomain [127.0.0.1] at port 56848
Oct 20 11:05:57 server1 spamd[13858]: spamd: handle_user unable to find user: ''
Oct 20 11:05:57 server1 spamd[13858]: spamd: still running as root: user not specified with -u, not found, or set to root, falling back to nobody
Oct 20 11:05:57 server1 spamd[13858]: spamd: processing message <92ED380DE31D4E33B0C25A7C26ECB2E1@LucilleNotebook> for (unknown):99
Oct 20 11:06:16 server1 spamd[13858]: auto-whitelist: open of auto-whitelist file failed: locker: safe_lock: cannot create tmp lockfile /.spamassassin/auto-whitelist.lock.server1..13858 for /.spamassassin/auto-whitelist.lock: No such file or directory
Oct 20 11:06:16 server1 spamd[13858]: plugin: eval failed: bayes: (in learn) locker: safe_lock: cannot create tmp lockfile /.spamassassin/bayes.lock.server1.13858 for /.spamassassin/bayes.lock: No such file or directory
Oct 20 11:06:16 server1 spamd[13858]: spamd: clean message (-1.0/5.0) for (unknown):99 in 18.8 seconds, 71477 bytes.
Oct 20 11:06:16 server1 spamd[13858]: spamd: result: . 0 - ALL_TRUSTED,HTML_MESSAGE scantime=18.8,size=71477,user=(unknown),uid=99,required_score=5.0,rhost=localhost.localdomain,raddr=127.0.0.1,rport=56848,mid=<92ED380DE31D4E33B0C25A7C26ECB2E1@LucilleNotebook>,autolearn=unavailable
Oct 20 11:06:16 server1 spamd[31022]: prefork: adjust: 3 idle children more than 2 maximum idle children. Decreasing spamd children: 13858 killed.
Oct 20 11:06:16 server1 spamd[31022]: spamd: handled cleanup of child pid [13858] due to SIGCHLD: interrupted, signal 2 (0002)

How can I help spamassassin determine the user for this domain? I don't believe that it has the issue with any other domains.

 

[twv]

Bump for possible help.

 

[NoBaloney2]

A SpamAssassin forum or list might be a better place to find the answer; most of us are just users when it comes to SpamAssassin, and we expect it to work as advertised, just as you do.

Jeff