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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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SBS 2011 POP3 Connector tries to pick-up non-existing e-mails

Windows Server SBS 2011, running Exchange Server 2010: Our client has their own Exchange e-mail accounts, but also some old POP3 accounts which are hosted somewhere else but are still in use. So we use the POP3 Connector to pick up those e-mails and…
Matthias
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Configuring POP3 access on Exchange 2013

I'm trying to setup POP3 access on our Exchange 2013 server. As of right now I've enabled both the POP3/POP3 backend. Both services are running. I've also enabled PlainTextLogin. I'm able to telnet to port 110 of the server, but when I try to login…
jbq
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Dovecot - Remove read email

Is there a way to automatically remove mail after it is read within dovecot either through a configuration or plugin? I'm running the following two packages: dovecot-core 1:2.0.19-0ubuntu2 dovecot-pop3d …
yekta
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Postfix IMAP/POP3 migration with UIDL preservation

I have two Centos servers: The old one (server1) with Postfix and Courier as mail service, using roundcube and atmail (free) for IMAP webclient and POP3 for desktop clients too. The new one (server2) with the same Postfix and Courier service,…
Biwu
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Why is pop.gmail.com network is unreachable?

I am trying to connect to pop.gmail.com using the following python script, running as root: import poplib pop_conn = poplib.POP3_SSL('pop.gmail.com', 995) and after minutes of waiting I finally see: socket.error: [Errno 101] Network is…
Alex
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My POP3 server doesn't receive email

I'm using hMailServer 5.3.3, with only POP3 and POP3S protocols enabled. I can telnet to the server just fine, but I can't seem to receive emails from anywhere (gmail, outlook) I don't get any Mail Delivery msgs when sending, nor does the server log…
Howie
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Delete message from POP3 without 'quit'

Is there a way to force-delete a message from a POP3 server without sending 'quit'? So, for example, right now I have: >> dele 1 << +OK Deleted. >> quit << +OK Bye-bye. I want something where I can flush the deleted messages before the quit, >>…
chroder
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I've got very brazen pop3 attack how to protect the server?

Today I have brazen attack to my pop3-dovecot server and mail log is full over (200MB) with this kind of information: Nov 11 09:28:14 lax dovecot: pop3-login: Aborted login (auth failed, 1 attempts): user=, method=PLAIN, rip=200.233.152.111,…
Ken Tang
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Workaround for POP3 and catchall mailbox multiple emails issue

I previously had an issue where emails sent to multiple users would appear multiple times per user (see this thread). I have discovered the source of the issue lies in the fact that multiple emails (one intended for each user) are pulled in by the…
Miles Hayler
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Scan POP3 mail accounts for suspicious activity

Is there a way to scan POP3 e-mails for certain domains / keywords assuming user/passwords are known? Our company would like the ability to know if suspicious e-mails are being sent, such as e-mails to/from employees of competitors (particularly if…
Beep beep
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POP server for default email client on ISPConfig

I have ISPConfig3 server , where SquirrelMail mail is already configured i have. I am able to login to my email account https://www.mydomain:8080/webmail/src/webmail.php. I want to configure this account with my yahoo account , which requires POP…
Asghar
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Windows Server 2008 SMTP & POP3 Configuration

This is the first time I have ever configured a VPS server without 3rd party applications such as Plesk control panel. I have got most functionality working in all my websites except I am very unsure as to how I can setup my email functionality on…
Alex Hope O'Connor
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MX record, different mail and web server

My domain(www.site.com) is hosted on a webserver running cPanel. My mails are handled by my ISP's server. To retrieve my mails, I use the following setting given by my ISP: pop3.isp.com smtp.isp.com On my cPanel, I have added MX records for both the…
NetworkNewbie
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Easy SMTP/POP3 Server for multiple domains

I've got a postfix & dovecot setup running on my Ubuntu 10.4 server. This works good but the configuration/management seems a bit overblown for my use case. Now I need to reinstall this Server and I'm looking for a solution that is easier to…
wintersolutions
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postfix pop-before-smtp isn't parsing the log correctly - need PERL help, I think

We've been using Postfix for a LONG time now and are kind of hooked on it. Now we need to "move into the modern era" and let people SEND email from our SMTP server(s) even when they're outside our network. So, tasked with this job, I've found…
Richard T
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