Problem with Fedora1 and ipop3d

[Rick Stevens]

Tim Alberts wrote:
> When I setup my system to have POP3 access to email, it seems to run for a 
> short period of time (many times once) and then I no longer get email from 
> the server.
> 
> Running sendmail, procmail, spamassassin ipop3d (included with fedora imap 
> package) and installed clamav.
> 
> What I've discovered is that the /var/spool/mail/user file gets overwritten 
> with the following text:
> 
>>From MAILER-DAEMON Thu Apr 22 11:50:17 2004
> Date: 22 Apr 2004 11:50:17 -0700
> From: Mail System Internal Data <MAILER-DAEMON at localhost.localdomain>
> Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA
> Message-ID: <1082659817 at localhost.localdomain>
> X-IMAP: 1082659816 0000000002
> Status: RO
> 
> This text is part of the internal format of your mail folder, and is not
> a real message.  It is created automatically by the mail system software.
> If deleted, important folder data will be lost, and it will be re-created
> with the data reset to initial values.

That's inserted into your mailbox by imapd, so at some point you fetched
the mail via IMAP, not POP3.

> I found in the /var/log/maillog the following lines:
> 
> Mailbox Vulnerable - Directory /var/spool/mail must have 1777 protection
> 
> Does anyone know what's going on?

/var/spool/mail typically has 775 permissions, owner root, group mail.
The "1" is ignored by Linux (the sticky bit).  The "other:rwx" bit is
a tad disturbing.
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
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