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Pop 3 server timeouts

Hi All

Some of our customers experience problems downloading e-mail from our 
POP3 server from a bandwidth constrained 3rd party network.

The trouble is, if they have a mailbox with say 100 messages, they 
download say 80 of them then loose their connection. The POP3 session 
times out, but all 100 messages remain in their mailbox. At the next 
attempt they download the same 80 messages again, often never reaching 
the end of the list.

We are using Maildir folders with courier-pop as a pop 3 server.

As I understand it, the POP3 RFC specifies that no mail should be 
deleted from the mailbox unless the entire session is completed 
successfully. I also recall when we used old fashioned mailboxes, that 
one of the popular POP3 servers violated the RFC by allowing individual 
messages to be deleted after they had successfully been downloaded.

I know this problem should be managed on the client end. But the client 
software (M$ Outlook), the end users and the 3rd party network are 
equally inept and so the problem gets referred back to us as the ISP.

Has anybody else faced this problem before?

Can somebody explain the details of the non RFC-compliant "tweak" that 
allowed messages to be deleted individually, after they had been 

Any ideas how to get courier-pop to behave in this manner?

Alternatively, are there any other stable, proven, POP3 servers that 
support Maildir's and also support this "feature"?



Ian Forbes ZSD
Office: +27 21 683-1388  Fax: +27 21 674-1106
Snail Mail: P. O. Box 46827, Glosderry, 7702, South Africa

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