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Questions tagged [pop3]

POP3 stands for Post Office Protocol used by e-mail clients to retrieve messages from a remote e-mail server.

As well as being supported by local e-mail clients POP3 is also supported by most webmail services such as Hotmail, Gmail and Yahoo! Mail.

POP3 is just one communications protocol on the web. Others include:

  • Transmission Control Protocol (TCP)
  • User Datagram Protocol (UDP)
  • Internet Control Message Protocol (ICMP)
  • Hypertext Transfer Protocol (HTTP)
  • File Transfer Protocol (FTP)
  • Internet Message Access Protocol (IMAP)

POP3 on Wikipedia

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POP3 / IMAP server for free mail-service

The company I work for have a free email-service (like Hotmail/Gmail) with about 50.000 users. The service is currently hosted by a partner, but would like to know what options we have for setting up our own servers and hosting a web-mail-interface…
SKG
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Windows server email issue

I am not very good with Windows stuff, spend most of my life with Cisco routers, I have situation where i am the only one implementing Active Directory on small network of 20 computers. The staff use Outlook on those computers Mac and PC. Some of…
Fahad Mahmood
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Easier way to manage POP3 accounts on CentOS6

We are setting up a brand new CentOS6 (64bit) server. Our hosting company just made it online and now we are installing packages such as httpd, mysql, etc. We have postfix running on the machine. What we want is to use this server as pop3 email…
Cem
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POP3 clients delete messages from the Google apps server

I set up Google Apps for my domain to let them handle my email. The control panel of the account has a setting that indicates what happens to an email once it is retrieved via POP3. When messages are accessed with POP is set to Keep copy in…
ralien
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email forwarding in ISPConfig/dovecot instead of POP3

i have a server with dovecot and ISPConfig installed. Right now i have mailboxes, and using my gmail for fetching emails using pop3. problem is google checks emails every X minutes. i have a hotmail account, and emails from that account are…
galchen
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exchange 2010 server error 550 5.7.1 unable to relay

We just moved to exchange 2010 and everytime one of our remote users sends emails they instantly get back "Your message did not reach some or all of the intended recipients. Subject: test Sent: 8/30/2011 10:06 AM The following recipient(s)…
Lbaker101
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Monitor Outgoing / Incoming email

Do you know any freeware software that I can install on our computers in order to silent log (to a folder, or forward to another email address) all received / sent email from that computer? The idea is to store all email into a folder and then parse…
s.mihai
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Configuring hMailServer email forwarding to use local SMTP on Windows 2008

I'm running into some issues setting up hMailServer to use the local SMTP on my server. I've got the local SMTP running and can send mail using telnet and through local .NET apps. The issue is with getting it to work with forwarding incoming email.…
Kevin Wilson
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exchange 2010 issues with IMAP/POP3/Iphone4. unable to setup on internal network

on our internal domain we have exchange 2010 that I have been setting up. It seems to all be working except the iphones/POP3/IMAP. They will not setup on the local network. As to not conflict with our current email my boss made me create a…
Lbaker101
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Any dovecot gotchas I should be aware of? Any alternatives to dovecot mailserver apart from qmail?

we are currently thinking about running a medium size mail service. Currently, dovecot seems to be the a good fit and we are about to setup a small test environment to check out some integration points with other systems. However, I was wondering if…
JohannesH
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Dovecot SQL authentication: How to differentiate between IMAP and POP3 access?

We are running courier currently which enables us to set different SQL userdb queries for IMAP and POP3. We need this because we do not want to give all users IMAP access, a boolean column in the userdb allows IMAP access if set. For performance and…
hurikhan77
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excessive ram usage by pop3-login and imap-login

I have a VPS with DirectAdmin and Dovecot installed on it. On this server on one of my accounts I have 3 different main account which I've managed using gmail and it's pop3 import feature. The problem is that the ram usage has gone up from around…
2hamed
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Postfix, Courier POP3 root account receiving all mail

I have installed Postfix and Courier pop3 on Ubunto Hardy. I setup MX record to point to the server I built and it is working to some extend. I can email root@myFQDN.com from outlook and it works OK. I can receive email at root@myFQDN.com as well…
Rich
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550 5.7.1 Your email messages have been blocked by the recipient OR by Trend Micro Email Reputation Service

I have an email account with POP3 connection and I am having a problem sending emails when I'm out of the office. I keep getting this email error message "550 5.7.1 Your email messages have been blocked by the recipient OR by Trend Micro Email…
Adrian Baker
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SMTP and POP3 Restriction

My Network administrators decided to disable SMTP and POP3 ? I can't use Outlook, Apple Mail or Thunderbird ? is there a way to get around this ?
Rorchackh
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