Craig's questions

I am using Nagios to monitor our enterprise systems. We recently added an ASSP (Anti Spam SMTP Proxy) server to the mix. I am currently monitoring the host, host load, disk space, and Sendmail queue depth on the service.

How can i monitor that ASSP is running OK? What can I monitor in addition to what I am monitoring now to know the server is healthy?

Monitoring the Sendmail queue depth will alert if there are a large number of messages backed up in the queue.

Are there any Nagios plugins? (I haven't found any ASSP specific ones) Or any homegrown scripts anyone can pass along?

I need to allow users to upload files to an FTP server anonymously. They should not be able to see any other files, or download files. It is a CentOS 5.2 server. I have a separate partition for the the upload area (mounted at /ftp).

I have tried to set up vsftpd, followed all the instructions/advice I could find. But, when a user logs in and tries to transfer a file it throws a "553 could not create file." error. If I do a 'pwd' it shows the directory as "/" rather than the anon_root of "/ftp/anonymous". Any attempt to change the remote directory ends with "550 Failed to change directory.". I have a subdirectory "/ftp/anonymous/incoming" that is writable for the uploads

SELinux is in permissive mode.

I am running version 2.0.5 release 16.el5 of vsftpd.

Here is the vsftpd.conf file:

anonymous_enable=YES  
local_enable=YES  
write_enable=YES  
local_umask=002  
anon_umask=007  
file_open_mode=0666  
anon_upload_enable=YES  
anon_mkdir_write_enable=NO  
dirmessage_enable=YES  
xferlog_enable=YES  
connect_from_port_20=YES  
chown_uploads=YES  
chown_username=inftpadm  
xferlog_std_format=YES  
nopriv_user=nobody  
listen=YES  
pam_service_name=vsftpd  
userlist_enable=YES  
tcp_wrappers=YES  
ftp_username=inftpadm  
anon_root=/ftp/anonymous  
anon_other_write_enable=NO  
anon_mkdir_write_enable=NO  
anon_world_readable_only=NO  
dirlist_enable=YES  

Can anyone help?