Server Fault Stack Exchange
Server Fault Stack Exchange

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

247 questions
-1
votes
1 answer

Sonicwall Block all internet traffic but email

I set up a sonicwall to block internet to users on a certain switch port. Works well, but now they want to access email, while still blocking the internet. I can't figure out a way to do this using Sonicwall without buying the Content Filtering…
Douglas Lawson
  • 57
  • 6
-1
votes
1 answer

DNS Setting for POP3 and SMTP email

I'm new to server configuration, I have used rented webservers a lot, but I tried venturing myself with a VPS to run my own web/email server. All is good, I installed VestaCP to help me with dealing with everything related, and I set up the DNS…
Antero Duarte
  • 109
  • 1
  • 4
-1
votes
1 answer

Transfer existing email to new postfix/dovecot server via POP3

I have to build a new email server with dovecot/postfix on CentOS because an existing supplier is becoming too erratic with their billing. I can do that but I am worried for a small problem. If I create a new server before I transfer the MX records…
Mr Heelis
  • 123
  • 6
-1
votes
2 answers

Can't send email on Windows Server 2008 with Mailenable

I've got a VPS running on Windows Server 2008 and I'm using Mailenable as an Email Server for POP3 and SMTP. I've had the VPS since January 2015, its my first time configuring a server by myself, but I got everything running fine, and it was running…
Jamie Peters
  • 1
  • 1
-1
votes
1 answer

Dovecot removing my mails

Why is dovecot removing my mails? I have setup an SQL database according to the Dovecot information, but I get this in my logs: May 14 14:23:53 alpha postfix/smtpd[16436]: Anonymous TLS connection established from…
www.data-blogger.com
  • 201
  • 1
  • 3
  • 10
-1
votes
1 answer

SBS 2003; Exchange 2003 can't receive mails without SMTP connection but without POP3 connector

i hope you can help. I'm losing my mind. I'm not a specialist in SBS but i have a huge problem. I wanted to replace the mircosoft pop3-connector with popcon because i was told that several mails could not be received. So i installed popcon and…
Henny
  • 1
  • 1
-1
votes
1 answer

Cannot Connect to POP Email Server via Third-Party Mail Client

I am trying to set up a POP email account via a third-party mail client in my office and can't do it. I have tried both Apple's Mail app and Mozilla Thunderbird, but I keep getting told that I have incorrect login information, despite the fact that…
RBergs
  • 1
-1
votes
2 answers

Forwarding a specific email address

We have a server running Windows 2003 with IIS SMTP installed for sending emails and POP3 Service to receive emails. We would now like to forward one of the email accounts (support@myDomain.com) to a completely new mail address hosted on another…
David
  • 121
  • 1
  • 5
-1
votes
1 answer

Email client that allows adding pop account from cmd?

I am looking for an email client that allows you to add all pop params: email, server, password etc from cmd At the moment our company uses OE but the ability to add a password is not there (the registry wants it as a REG_BINARY and even then points…
Myles Gray
  • 659
  • 4
  • 12
  • 33
-1
votes
1 answer

Mail server: can't connect via POP/IMAP

I've followed this guide on setting up a mail server on my dedicated server. I've been able to send mails from the php application I'm using and the linux commandline (using telnet, php, etc). The problem is that I cannot connect to the server via…
MelkerOVan
-1
votes
1 answer

Email Disappears between IMAP and POP

I have a client who has an online store, and receives order notifications by email. Their order emails are flowing into their mailbox on the server, but never show up in Outlook. Their Outlook is configured as POP, I have reset the mailbox password…
LuckySpoon
  • 81
  • 11
-2
votes
1 answer

What happens if you have one imap client and one pop client?

I have a mailbox on my server which accepts POP and IMAP connections. If I connect one remote client via POP and another remote client via IMAP, what will happen? Will the emails remain on the server or will they be removed to the POP client?
Mazatec
  • 161
  • 7
-2
votes
1 answer

Postfix POP3 NOQUEUE: reject: RCPT error

I am getting an NOQUEUE: reject: RCPT error when trying to send mail via POP3 and Postfix (note: IMAP works fine). Feb 21 06:57:04 r2d2 dovecot: pop3(br@telecomm.com): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0 Feb 21 06:57:05 r2d2…
mine
  • 197
  • 1
  • 4
  • 14
-2
votes
3 answers

Which server software and configuration to retrieve from multiple POP servers, routing by address to correct user

I am setting up a small email server on a Debian machine, which needs to pick up mail from a variety of POP servers and figure out who to send it to from the address, but I'm not clear what software will do what I need, although it seems like a very…
rolinger
  • 111
  • 3
-2
votes
1 answer

The difference between hosting's pop and Gmail's

I've just tried to pop emails from my own hosting to Outlook. I found that after Outlook did a pop, emails in my hosting are gone. This is not like Gmail does for pop. I'm curious if there is a setting for this. My hosting's console is cPanel and…
Jeaf Gilbert
  • 97
  • 2
1 2 3
…
16
17