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

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How to set up email DNS settings with a DDNS domain

I am trying to set up an email server on ubuntu. I have followed this tutorial which has worked perfectly but I am now having problems with my DNS. I have a DDNS domain from www.no-ip.com -> ...
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1answer
26 views

How to check if clients connect to IMAP/POP via TLS or SSL?

I am willing to disable SSL on my dovecot servers (Debian GNU/Linux), leaving TLS as the only option. Before doing so, I would like to know who is still connecting via SSL with older or misconfigured ...
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1answer
44 views

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 ...
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0answers
74 views

dovecot userdb passwd-file default_fields uid not expanding %variable

I'm trying to set up a very simple shared mail server, where each 'domain' is a system user, i.e. 'example.com' is a real user with /home/example.com/, a uid of 5001 and gid 'example.com' of 5001. ...
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0answers
46 views

Exchange 2013 not showing IMAP or POP3 server

When going on Settings for POP or IMAP Access via OWA, all the settings show Not available. I made sure that Microsoft Exchange IMAP4, Microsoft Exchange IMAP4 Backend, Microsoft Exchange POP3 and ...
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1answer
103 views

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 ...
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0answers
17 views

Mailings to specific email provider causing popstate corruption?

We send out a weekly mailing to several thousand subscribers using an old version of Lyris ListManager, and have done so for years without incident. Every month or so starting about a year ago, two ...
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1answer
36 views

transferring mail hosts clients having to redownload all mail

im transferring mailboxes from godaddy over to opensrs. When clients connect to their mailbox after it has been transferred they are having to re-download all their old mail to their mail client ...
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0answers
30 views

the delivery report includes the original letter

We have installed windows server 2008 R2 Enterprise and Microsoft Exchange 2010. The clients use Outlook from Microsoft Office 2010. if we use POP3 protocol between exchange and user then the delivery ...
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3answers
144 views

Transitioning from a POP only email account to new IMAP enabled account - how can subsequent emails to the old POP only email be supported?

I have just started working for a growing small business. I am the first person they've had with any real technology background and from this point onward I will be organising and managing any IT ...
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1answer
111 views

Courier-IMAP pop3d auth over mysql

I've got a task of migrating one mail server from one box to another and so far I have configured Postfix and it's working. But, Courier pop3d server fails without exception. So, I have Courier pop3d ...
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0answers
214 views

Exchange 2013 pop3 authentication issue

We have two 2013 sp1 CAS servers which accept 995 and 993 connections through a hardware load balancer. When testing the POP3 connection in Outlook it will log in and send and receive but on a regular ...
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1answer
52 views

How to find old email accounts in imap? [closed]

I have a webmail with 90.000 imap accounts I'm trying to delete old email accounts (for example : accounts that has not been used for 1 year) this link may help to best answer: ...
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1answer
97 views

What happens inbetween SMTP and POP3?

I understand SMTP, and to a lesser degree POP3, but I feel like I'm missing a large chunk inbetween. I see this image on a Microsoft page: and I feel like what I'm missing is the "Internet" part. ...
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2answers
82 views

Simplest Way to Setup Email for Various Domains

I'm beginning to use Mandrill to send out transactional emails from my various domains. Now what I'd like is a way to receive these emails simply w/out setting up a mail server on my linux boxes. I'm ...
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1answer
38 views

Exchange 2010 - is it possible to have a separate password for POP3 access?

basically I want to see all my work emails in my google account. We used to have forwarding to google - but google started to reject our mail recently claiming it's spam. So i'm thinking about making ...
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1answer
195 views

Dovecot + OpenLDAP

I am trying to get dovecot 2.0.19 authenticate users via LDAP (OpenLDAP 2.4.28) and using Wireshark to debug the process. It looks like the basic configuration of dovecot is fine, but it doesn't pull ...
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1answer
73 views

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 ...
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1answer
765 views

Hybrid exchange and POP3 setup - some POP3 mailboxes and some exchange mailboxes

I'm looking to move some mailboxes to the Office365 exchange plan, however I also need to keep existing POP3 accounts. Option 1: Is there a best practise for this setup? Do you simply allow Office365 ...
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1answer
490 views

Using IIS smtp for incoming and outgoing and use hMailserver for mail accounts

I have installed hMailServer in one machine and IIS STMP in another machine. Even though hMailSever itself is a SMTP server. I can't avoid this because the IIS SMTP server has some hooks which which ...
-1
votes
1answer
269 views

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

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 ...
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1answer
2k views

Exchange: use Port 110 for both POP3 & POP3/SSL?

On our Exchange 2010 POP3 is configured to only allow secure logon (TLS connection for authentification). Now, the default port for "plain" POP3 is 110, and for POP3 with SSL is 995, hence with the ...
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1answer
55 views

Sendmail dropping domain name from the username

I'm setting up Dovecot with Sendmail and I almost have it working (I think). The username for the account is a full email address such as "username@domain.com". What seems to be happening is that ...
0
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3answers
735 views

SMTP sent E-mail not copied to Sent Folder [closed]

I discovered that some (few) providers don't copy into the Sent folder those E-mails which are sent from mail clients through SMTP. They only copy them to the sent folder if you send them from their ...
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1answer
1k views

Setup pop3 mailboxes in on Windows Server 2012 datacenter

a complete beginner question but I cannot find an answer with Google: Where do I setup email accounts / POP3 mailboxes on Windows Server 2012? I setup smtp service and can send emails from the server ...
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1answer
85 views

external pop email relay

I want to offer to my customer this possibility : get her pop3 emails from external pop3 server forward the news emails to the new external pop3 server I have find lot of tools for sync imap ...
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1answer
433 views

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 ...
2
votes
1answer
613 views

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 ...
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1answer
61 views

roaming Exchange/Outlook users also need POP3 accounts

I have 10 Win SBS 2008 User Accounts and 10 PC's. Three of the persons who are associated to the user accounts work at different PC's each day. These three people also do have POP3-Emails which have ...
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1answer
4k views

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 ...
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1answer
26 views

Connect to old mailaccount after domain transfer

A few days agoo we successfully launched a new website for a new client. The client had allready a simple wordpress site hosted on one.com, so we had to request a domain transfer. After the ...
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1answer
204 views

Dovecot POP3 username - does it require the @ symbol?

I'm having some mail issues which I'm trying to resolve. When I connect to my mail server using telnet should I supply my username like this: USER name or USER name@domain.com or doesn't it ...
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2answers
85 views

High performance POP3 solution that can handle a few accounts with millions of emails

Due to regulations we have to create a solution that communicates over smtp/pop3 (basically RPC over SMTP/POP3) only. Messages are sent from one application with SMTP, delivered to a mailbox, and ...
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1answer
361 views

Dovecot error: “Message ordering changed unexpectedly” after migration from courier

I have been setting up a new mail server and copied our client's old mail to it. The old server has Courier (under Plesk), we're using Dovecot on the new server. Most accounts seem to work fine ...
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1answer
61 views

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 ...
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1answer
246 views

Round-robin mail forwarding in Exchange 2010

We are using Exchange 2010 to receive B2B messages as mails. To balance the increasing number of incoming mails to multiple parallel application servers, I am looking for a way to forward the mails in ...
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1answer
302 views

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 ...
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votes
1answer
37 views

Two servers mails [closed]

is that it is possible to have two mail servers in parallel, ie a primary through which mails are routed to the outside and a secondary for the exchange of mails locally. and the two servers are ...
0
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1answer
633 views

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 ...
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votes
1answer
381 views

how to receive emails on linux? [closed]

Is there any small utility to receive emails on linux ? Ideally I would need to point mx records on my server and through just a command read all the emails received. I don't need pop3, imap, any user ...
4
votes
2answers
553 views

Security Risk involved in disabling SMTP authentication on POP3 Server?

I provide IT Services to a client who, for the longest time in the world, has been using a POP3 server from Network Solutions to handle their email. At this time, I'm introducing the McAfee SaaS ...
0
votes
2answers
783 views

Dovecot Not Receiving Mail From Outside Servers

After a long and hard battle, I was able to configure postfix to send mail to outside domains. Now the problem is receiving them from outside domains. I use the pop3 protocol with dovecot, and it ...
0
votes
1answer
1k views

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 ...
0
votes
1answer
113 views

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 ...
2
votes
1answer
131 views

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 ...
-4
votes
2answers
186 views

POP download from now on [closed]

Is it possible to configure options on email server containing Postfix and Dovecot, features similar to Gmail settings: Enable POP for all mail (even mail that's already been downloaded) Enable POP ...
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vote
1answer
517 views

Regular POP3D Attacks and Blocks

I'm using a self-hosted wordpress blog. I'm using Gmail to access my domain email accounts. I want to know, is built-in email services such as exim, etc are necessary if we are using Gmail to manage ...
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2answers
204 views

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): ...
2
votes
2answers
1k views

Dovecot, POP3 and Gmail

I setup Postfix and Dovecot on a new Ubuntu box following these directions. From a client machine, I validate that POP3 seems to be working telnet mydomain.com 110 +OK Dovecot ready. USER ...
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1answer
2k views

Nginx configuration as a POP3/SMTP reverse proxy on DMZ [duplicate]

Possible Duplicate: nginx as smtp proxy i am here to ask help about how to configure Nginx as a reverse proxy for POP3/SMTP service. We have a Zimbra server offering services as webmail, ...