Re: [cobalt-users] Command stream end of file errors...

["Gerald Waugh" <gerald@xxxxxxxxx>]

"Steve Werby" <steve-lists@xxxxxxxxxxxx>  wrote

> "Brian M. Rahill" <brian@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > I've got a new user on the server "rjordan" and now my logs are filling up
> > with these messages.  Any clue on what they mean?
> >
> > Apr 26 14:04:01 admin imapd[21918]: Login user=rjordan
> > host=d-207-5-176-119.gwi.net [207.5.176.119]
> > Apr 26 14:04:02 admin imapd[21918]: Command stream end of file, while
> > reading line user=rjordan host=d-207-5-176-119.gwi.net [207.5.176.119]
> >
> > I've searched the archives and have seen people complaining about these
> > messages but the users was always the active monitor. The response was
> that
> > it was the active monitor checking to make sure imap was running.
> 
> In this case, it's your user 'rjordan' connecting to the IMAP server to
> check his IMAP mailbox.  It's nothing to worry about, unless you don't want
> your users using IMAP mailboxes.  If you don't, comment out the line for
> imap in /etc/services after letting your users know so they can migrate to
> POP mailboxes.  I imagine you have quite a few lines in your logs that look
> like:
> 
> Apr 25 02:22:36 ns in.qpopper[20814]: (v2.53) POP login for "a0130004" at
> (user-2ivenfo.dialup.mindspring.com) 165.247.93.248
> 
> These are logins to access POP email accounts.  Also, nothing to get worried
> about.
> 
> > I also seem to be getting a fair number of these:
> >
> > Apr 26 16:32:38 admin sendmail[29584]: f3QKWcX29584:
> > <'J.@Z?SK.M!<-?7VQ[@A;J3B&>... Unbalanced '<'
> > Apr 26 16:32:50 admin sendmail[29593]: f3QKWcX29585: f3QKWoX29593:
> > postmaster notify: Host unknown (Name server: ^x: host not found)
> > Apr 26 16:43:37 admin sendmail[30135]: f3QKhbX30135:
> > <Y`X^@K'OXPVN[BQ^6.W(&>... Unbalanced '('
> 
> The "Host unknown" means that Sendmail could not resolve the host of the
> email address that sent to your server and therefore is not going to deliver
> the email.  I have no reliable insight into the rest of those lines.

Exactly what the error message states:
the number of '<' is odd, hence "unbalanced"
and the number of '(' is odd, hence "unbalanced".
Someone sending a bad email address?
Gerald