400: error flushing "sock1372": invalid argument
error flushing "sock1372": invalid argument
    while executing
"flush $channel"
    (procedure "mime::copymessageaux" line 178)
    invoked from within
"mime::copymessageaux $token $channel "
    invoked from within
"::mime::copymessage $part $state(sd) "
    invoked from within
"wtextaux $token $part "
    invoked from within
"smtp::sendmessage $token -recipients $to -servers $server -username $user -password $passwd -originator "\"$fullname\" <$emailaddr>" "
    (procedure "winSendMail" line 27)
    invoked from within
"$mailer $TtMailBox(TO) $TtMailBox(CC) $TtMailBox(BCC) $TtMailBox(SUBJECT) $TtMailBox(BODY) "
    (procedure "preSendMail" line 59)
    invoked from within
"preSendMail "
    ("uplevel" body line 1)
    invoked from within
"uplevel \#0 $cmd"
    (procedure "Button::_release" line 19)
    invoked from within
"Button::_release .mail.bot.send"
    (command bound to event)