As a test, I opened multiple telnet connections to the POP3 server and
provided user/pass credentials to both and then issued a LIST command on
both and was successful in both windows. So apparently, POP3 allows
multiple logins. Not sure what to tell you regarding whether that is
normal or expected behavior.
A POP3 client is supposed to track the ID of each message it downloads,
so it knows what is considered "new" and what has been previously read.
This is one of the reasons that mail retention settings (like "leave a
copy of the message on the server for x days", "download messages", etc)
are done on the client side. POP3 is an OLD protocol. Unless you're
pushing POPS/sPOP, I would try to push your users toward IMAP. Pretty
much every modern mail client supports it.
On 12/17/2012 22:02, Rajesh M wrote:
hi
i run an email server set up with large number of users ie around
5000
with lots of data - around 3.5 tb
i use qmail pop3 and dovecot imap.
the issue i face is that many users use both webmail and pop3
and they store emails in their inbox
now many times when they download via pop3 their entire inbox starts
downloading again.
also due to numerous such pop3 connections the server sometimes gets
loaded
also in one incidence i found over 50 pop3 sessions of the same user
- i
had to manually kill these.
question 1
-- i thought that pop3 protocol means only one login at a time ---
how
does qmail pop3 allow multiple logins ?
question 2
is there a way to restrict email download by various pop3 clients to
only
new mails or emails for the last 3 days.
i know a few other companies who do that -- they allow download of
emails
only upto the last 15 days.
is there any similar solution with qmailtoaster ?
rajesh
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