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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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Access POP3 content from other computer

I have a tough mission, that I have no idea how to accompish it. In our company, all the e-mail accounts are configured as IMAP accounts, therefore we can access the e-mail from wherever. However, there are 2 e-mail accounts configured as POP3…
questionador
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Best way to serve mails from public SMTP server to the internal mail server without initiate connection from DMZ?

I have a basic question for a mail setup which i have to implement. We have an SMTP server (Postfix) in DMZ, which should receive and accept all mails for our internal users. Then we have a internal mail server which should provide all the mails to…
RustySyntax
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Gmail connection error pop3 on dovecot postfix server

I configured a Dovecot Postfix mailserver on Ubuntu with letsencrypt certificates. It runs fine on mail clients like MacOS mail both in imap and pop3. No errors. However after adding two accounts to my gmail using pop3 I get 50% of the times a…
Klodder
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Is possibile to download to Exchange 2013 mailbox an external Pop3 mailbox?

Once a time Exchange let download an external mailbox to a local mailbox through a "Microsoft Connector for POP3 Mailboxes". Then I could read my external/pop mail to a local exchange mailbox. Is it possibile with 2013? I cannot find the connector…
Tobia
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Downloading IMAP/POP3 emails on a remote server to a local mail server

I need to setup a local server that will download email (IMAP or POP3) from remoteserver e.g gmail or webmail, to a local server. Such that users can have structured access (either via mail client or web clients like Roundcube) to that download…
SLegendary
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How To configure Postfix and Dovecot for remote IMAP / POP sending of email on Fedora 32

Background I've been the administrator since inception of this 24-ish year old site which hosts a lot of virtual domains, etc, and from the late '90s one important feature we had working was allowing IMAP clients to connect to both read and send…
Richard T
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Why cannot I retrieve emails from Cyrus-imap pop3 server?

When I click "Get Messages" in the Thunderbird client, I cannot retrieve any email from my Cyrus-imap pop3 server. I configured Thunderbird client to use pop3 port 995, Connection security: SSL/TLS. There is no error messages shown in Thunderbird .…
William
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Can't login to IMAP/POP3 server external

I have installed Postfix, Dovecot and MySQL via this tutorial (https://www.linode.com/docs/email/postfix/troubleshooting-problems-with-postfix-dovecot-and-mysql/). When I do the following command, I get the following response: $ openssl s_client…
yesterday
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Security issues with SMTP

I am looking at SMTP and POP3 and am trying to find the security issues with both protocols, I have found that SMTP can be easily impersonated on port 25. However I am struggling to find security issues, only standard issues like internet connection…
Sarah Jane
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Can send test mail via Outlook, but cannot connect to Exchange Server with POP3

We are testing Exchange Server 2016 mail server. We can connect to user's mailbox via OWA (Outlook Web Access). When testing POP3 mail from Microsoft Outlook (on a non domain-joined PC) we can send test email but can not login to POP3 server. The…
SpiderlinK
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Does secondary or backup MX server deliver queued emails to users?

Suppose, I have a primary MX: mx1.abc.com with priority 5 and secondary mx as mx2.abc.com with Priority 10. I have independent IMAP/POP servers configured to fetch email for abc.com domain. (imap.abc.com & pop3.abc.com) Suppose mx1.abc.com goes…
Anand Shrestha
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How does IMAP/POP Server fetch emails from my SMTP server?

I have a domain abc.com with MX record/SMTP server mx1.example.com. My IMAP/POP server (incoming server) is imap.example.com and pop3.example.com. How does my IMAP and POP server fetch emails from mx1.example.com ? Do IMAP/POP Server use any…
Anand Shrestha
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ehcp - access pop3 account

I finally manage to get mail working with ehcp on an ubuntu server. I can get and send email from the webmail, but I can't seems to be able to access the pop3. I can telnet to the pop3 (server?) but my identification are rejected. Apparently the…
user14728
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Prevent using cleartext passwords in e-mail protocols?

Checking an older laptop in my possession, I found that all of the POP accounts set up on that device, were sending passwords in clear text when Sending and Receiving (Found this with the assistance of Wireshark). Are there some good ways to prevent…
Johan Brink
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Telnet test pop3

I have problem with using POP3 to recieve e-mail from my VPS. In Mail app I'm getting message, that connection failed and I should check login and e-mail anyway, it's good. I try to check it via bash: telnet mail.inovestudio.com 110 Trying…
user1870556
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