> 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 >> >> >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: >> qmailtoaster-list-unsubscr...@qmailtoaster.com >> For additional commands, e-mail: >> qmailtoaster-list-h...@qmailtoaster.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com > For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com > >
thanks for your reply. primarily i wish to know whether there is a solution ***on the server side** to restrict download of messages of only the last say 15 days. rajesh --------------------------------------------------------------------- To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
