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

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58 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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1answer
3k views

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 ...
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3answers
2k views

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: ...
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2answers
55 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
753 views

Recover hard deleted items from Exchange

My MD had a clear out of her mailbox (anything from september 2011 back to 2005 was deleted!) she is now majorly regretting this as there was contracts etc etc in there. Now I have looked in OWA but ...
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1answer
26 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
85 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
32 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
158 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
127 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 ...
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1answer
230 views

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 ...
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1answer
74 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
433 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
41 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 ...
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3answers
102 views

Mail server (Win2003) can't receive emails, why?

Everything is fine when checking with smtdiag.exe Everything works fine with telnet. Tried from outside, connect to mail server everything works fine also - this means no ports are blocked. The ...
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3answers
149 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
405 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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2answers
2k views

SBS2011 - exchange 2010 - NEw mailbox accounts not showing in list of pop3 connector

I have migrated a SBS2003 --> SBS2011 and configured the pop3 connector for all the migrated mailboxes, which works fine. But when I create any new accounts, they are not listed as available accounts ...
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1answer
275 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 ...
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1answer
169 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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1answer
290 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
48 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
2k 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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2answers
894 views

Mixing personal (SMTP/POP) and business (Exchange) mail in Outlook

Although I haven't done it, I'm pretty sure that you can set up Outlook (2010) to work with both SMTP/POP email and with Exchange simultaneously. Here is the scenario: I work with a group of ...
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1answer
24 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
164 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
79 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
226 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
49 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 ...
1
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1answer
152 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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0answers
102 views

Dovecot: Limit time between connects?

some of my Postbox users are checking mail every 10 or 20 Seconds. It is somehow possible configure Dovecot to limit the time between every login to 1 minute?
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1answer
36 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 ...
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1answer
382 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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2answers
259 views

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 ...
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1answer
191 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 ...
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1answer
295 views

Windows mail server that supports username wildcard aliases?

Is there any free mail server (in this case POP3) for Windows that supports aliases? e.g. User name: iboyd Aliases: ian@serverfault.com ian.*@serverfault.com ...
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2answers
379 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 ...
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2answers
432 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
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1answer
428 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
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1answer
82 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 ...
1
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1answer
798 views

test a pop3 secure ssl port 995

i am trying to login to microsoft exchange online using openssl openssl s_client -connect pop.mail.apac.microsoftonline.com:995 however when i pass the USER command it fails +OK The Microsoft ...
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1answer
302 views

Transfer WebMail Client mails to another WebMail Cleint

I was using web mail client provided from my hosting company. Everything i was reading or sending it was done there. Now i want to install my own web mail client like Round cube or similar. 1) Can i ...
2
votes
1answer
97 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 ...
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votes
2answers
126 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 ...
1
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1answer
350 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
441 views

Secure POP3/SMTP proxy?

An ISP doesn't offer secure/encrypted POP3/SMTP connections to its email servers. (I could forward the mail to another mail service that does, but I'd like to try a proxy) Is there some simple ...
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1answer
253 views

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 ...
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2answers
169 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
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2answers
854 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
1k 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, ...