Re: Dynamic Host - SMTP Message Filter Setup

[Harry MF Teasley <het3@xxxxxxxxx>]

On Nov 23, 2003, at 11:19 AM, elton wrote:

> I don't use IMAP much; all of my users are on POP.  However, I 
> started using IMAP and IMAP errors are mailed to root when a action 
> can't be performed; I this this is by default.  I just check my root 
> mail account (first time in months) and it had 250 messages on IMAP 
> errors -- was told by Tenon this is normal, not to sweat it.

Oh, OK.  The fact that between the error messages for the missing 
spam messages, and the IMAP errors being generated because P.O 
couldn't deliver the error messages about the missing spam messages 
sufficiently quickly, my server generated over a gigabytes' worth of 
these error messages before I shut it down shouldn't worry me.

It was generating a meg of messages a minute when I shut it down, 
having seized the machine up with DDoSsing itself.  I spent the 
evening backing up mail, uninstalling and reinstalling P.O and 
recreating user accounts and mailing lists to stop Post.Office from 
DDoSsing itself with error messages.  I first stopped P.O from 
forwarding root mail to my regular account after my regular inbox 
received about 83,000 error messages and wouldn't load in any IMAP 
client I could find.  I didn't count the messages in root's mailbox 
after that, just going on overall mailbox size as it grew.  All the 
errors were "can't find this message to deliver", "can't deliver this 
message right now", or "IMAP-Server couldn't complete its task" 
errors.

It's working now, without killing itself.  Diagnosing the server's 
configuration was made more difficult by the fact that it must be 
running to examine, which revealed itself to be a design flaw, if the 
server is running away like it was.  Obviously, these are error 
messages that I don't have the option to not generate, should the 
occasion arise.  I'd prefer to not get them, certainly not nearly so 
dramatically.

A few more options in the Error Handling page wouldn't go amiss: 
don't email me when an IMAP process can't complete a task, and don't 
email me when it can't find a particular message, those would be good 
options.  How some of you are successfully deleting your /messages 
folder of mail is a mystery to me, because it sent my P.O server to 
hell for a day.

Harry Teasley

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