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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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Looking for Script to change SMTP server address for office 2010

We have a pop3 email system. So we send our email out to a third party to do the scanning and filtering for us. We are switching companies to a new company at the end of the month. I need to change everyones SMTP server and remove the outgoing mail…
James
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Thunderbird disconnecting from Dovecot

I'm managing a Dovecot POP3 server which serves large number of users. Some of these users are in remote locations. I'm getting reports about users whose Thunderbird clients show the number of mails to be downloaded, but disconnects after…
bayindirh
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Disable user_deny.db in Cyrus/imapd

We have a cyrus 2.4.12 on Debian, we use packages, rather than building each software ourselves. I am getting the this "log" constantly, a lot of, various users, and 8-10 times per user request: fetching user_deny.db entry for 'user123' I have…
netmano
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Where exactly does Outlook keep it's information about already downloaded messages when using POP?

When I create a new Outlook profile and re-add POP account, Outlook starts to redownload old messages from POP server if Outlook had previously configured with "Leave messages on server" setting. This occurs even when the very same PST file is used…
Henno
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Messages via POP delivered multiple times (Hosting)

We have two servers with Merak Mail Server, serving a considerable number of accounts (15000). We had a terrible problem with our storage server, and we've been forced to move the mails to other server. We don't know why, but email clients (Outlook,…
Jacob
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Getting POP3-SSL using a POP3 client

We outsource our email using exchangemymail.com. They have POP3 access, but it requires SSL. Our CRM system has a mail sweeper that only supports regular POP3. How can I bridge the gap between secure and insecure POP3 so that I can sweep a mail…
user640
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Moving mail from one server to another -- with no control panel and only pop3

I'm trying to migrate a client's hosting from a really bad host to a new one. The current host provides no control panel (they're a bit control freaks, you have to lodge a ticket to do anything) so I can't back up the mail from the control panel. I…
Ben
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Ubuntu, mail servers and MX records

Some background: I have set up an Ubuntu cloud server on Rackspace where I host two domains, say, www.domain1.co.uk and www.domain2.co.uk. Both domains are hosted on the same cloud server. I purchased the domains from 123-reg and redirected the…
ela
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When to move past POP3 servers, and what next?

My company has ~40 employees, all using POP3 mail accounts on a shared host. They allow up to 200 email boxes, have no limit on the # of outgoing/incoming e-mails/hour, and we've never had really big problems with them (plus, they're REALLY cheap).…
Beep beep
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fail2ban: stop pop3 login attempts?

How do I set up fail2ban so that all those pesky pop3 login attempts are taken care of? I am using Ubuntu 9.04 and here's an extract from the pop3 log as I see it in the mails that Logwatch sends: LOGIN FAILED, user=Administrador,…
molidoli
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POP3 traffic stalls between small bursts

What follows is a description of the strangest network problem I have encountered. The story I am working with a client that reported being unable to check their email, starting this morning. Two weeks ago they completed a big upgrade that saw all…
Nic
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Limiting POP3 mailbox for one connection at a time? (Dovecot)

Is there a way to limit the number of concurrent connections to a POP3 mailbox on a Dovecot server? The current situation is that if two clients connect to the same mailbox, then the server accepts both connections, but only one can run commands on…
arikfr
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How to Telnet to Pop3 server?

I have an interview coming up and I want to play around with POP3 and SMTP protocol. I'm trying to login to my gmail's pop3 server account using Microsoft Telnet command line program but it's not working. I'm typing pop.gmail.com 995 into the…
burnt1ce85
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How can I forward to a specific MTA based on email address?

How can I forward incoming messages to a specific MTA based on the username portion of the recipient's email address? I would prefer linux-based software, but Windows would work too. Background: Our organization is transitioning from ISP-hosted POP3…
Nic
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Move 53,800+ files into 54 separate folders with ~1000 files each?

Trying to import 53,800+ individual files (messages) using Gmail's POP fetcher. Gmail understandably refuses, giving the error: "Too many messages to download. There are too many messages on the other server." The folder in question looks like…
ane
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