Because the pop3.domain.com dns record point to a CNAME, and the CNAME point to two IP address. User use outlook, setup the pop server to pop3.domain.com, when user connect to the pop server to receive emails, it will connect to the different server and will receive the same email from the different server.
-----Original Message----- From: Tomas Kuliavas [mailto:to...@users.sourceforge.net] Sent: 2010年4月19日 12:13 To: Dika Ye Cc: qmail-ldap@qmail-ldap.org Subject: RE: duplicate emails If account is only one, how they can connect to two servers? Looks like your email program can see those servers as different ones and keeps different sets of downloaded message ids. 2010.04.19 04:17 Dika Ye rašė: > Users have only one account setup in their email client, and they keep > emails on the server. > > -----Original Message----- > From: Tomas Kuliavas [mailto:to...@users.sourceforge.net] > Sent: 2010年4月15日 18:20 > To: qmail-ldap@qmail-ldap.org > Subject: Re: duplicate emails > > 2010.04.15 09:27 Dika Ye rašė: >> Hi all, >> >> >> >> I had setup qmail-ldap server (patch qmail-ldap-1.03-20060201.patch >> <http://www.nrg4u.com/qmail/qmail-ldap-1.03-20060201.patch.gz> ), there >> are >> two mail servers (server A and server B) provide smtp and pop3d >> services. >> >> These servers using the same storage (NFS) to store mail data, user will >> connect to server A pop3 or server B pop3 to receive emails. >> >> >> >> The problem is that when user connect to server A to receive emails, >> then >> they connect to server B, they will get the duplicate emails. > > Do your users have two accounts set up in their email programs? Do they > set them to keep emails on server? > > -- > Tomas > > > >
