5xx errors in SMAIL log

Hi all (and happy new year),

I saw lines like these in the SMAIL log:

"tsd.unifi.it"	"1294151990810.a28.880.25d715.dex1"	"L1C7667" 
"[PRIVATE]"	"[PRIVATE]"	"SMTP"	"gmail-smtp-in.l.google.com." 
"2011-01-04 15:36:46"	"5.5.1 Unrecognized command. a11si22710935wer.104"
"tsd.unifi.it"	"1294151991384.a28.880.25d722.dex1"	"L1C7667" 
"[PRIVATE]"	"[PRIVATE]"	"SMTP"	"mx1.mail.eu.yahoo.com."	"2011-01-04 
15:36:49"	"Command Unimplemented"

Looks like XMail picked up a file from /spool/local containing a 
single-dot line and tried to send it untouched. It tried again and 
again before giving up and, as a result, non-local recipients got 
multiple copies of the same (truncated) mail, so in a sense delivery 
was successful ...

IMHO: if the LMAIL client is supposed to escape leading dots, XMail 
should take care of unescaping them in LOCAL delivery (and should 
validate spool files better ... and documentation of LMAIL files 
format should be updated ...).

Alternatively, XMail should take care of escaping leading dots when 
doing SMTP delivery of files picked up by LMAIL.

Ciao, Francesco

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