Usernames without alpha characters

Tore Anderson tore at
Tue Sep 14 05:16:23 EDT 2004

  Hi.  I've run into problems with usernames like "123" or "1_1".
 What seems to be the common thing is that that none of them contains
 alphabetic characters.  Cyradm creates them just fine (although they
 for some reason is created under the "q" directory when using a hashed
 spool), and lmtpd delivers to them just fine.

  However, logging into those accounts with POP3 or IMAP fails in
 mysterious ways.  pop3d says

    USER 1234
    -ERR [AUTH] Invalid user

  and imapd says

    A0001 LOGIN 1234 foo
    A0001 NO Invalid user
    * BAD Invalid tag

  I don't really understand what's going on here.  Have anyone else had
 this problem and found a solution they'd be willing to share?

Tore Anderson
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