IMAP stands for Internet Message Access Protocol and is the other e-mail protocol along with POP.

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Hmailserver and Outlook 2013 can send but not receive any emails in POP3 or IMAP

I'm having problems receiving any email from outlook. I can send email through smtp using comcast (my isp) without a problem, but I can't receive any email using either personal pop3 configured in ...
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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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Exchange IMAP4 connector - Error Event ID 2006

A couple of users in my organisation use IMAP4 to connect to Exchange 2007 (Update rollup 9 applied) because they prefer Thunderbird / Postbox clients. One of the users is generating errors in the ...
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85 views

IMAP server can't read (open) mails using fetchmail, procmail & dovecot

I'm trying to setup a mail server ! Everything seems to be ok (after some loooong days) but when I tried to read mail with IMAP server : Apr 18 17:38:48 sd-84941 dovecot: imap(dlp): Error: ...
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1answer
26 views

How do you measure IMAP performance?

We have a mail server built on top of a Gluster distributed filesystem. While this has proven to be fairly easy to set up and quite stable, the performance of our webmail has been quite slow. So now I ...
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pop3 mail proxy on linux server

I have an ISP pop3 account and I need to retrieve mails on my server (ubuntu server) to feed an IMAP webmail (roundcube) installed on my server too. So, I need : my_ISP_POP3server -> ...
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Backing up the open-source edition of Zimbra mail

Background: We run the open-source edition of Zimbra mail (5, not 6 yet) and while it's not something that we want to encourage (prevention is better than a cure), we currently have no way of backing ...
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48 views

SELinux preventing Asterisk from connecting to IMAP server for voicemail

I am running Asterisk on Fedora 23 and am using the voicemail IMAP module to store voicemails to Gmail. When SELinux is in enforcing mode it prevents Asterisk from connecting to Gmail. Here is the ...
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EXIM - 550 Cannot receive from specified address - Sendgrid

We're having some intermediate issues with exim where some emails go through and then others get the 550 Cannot receive from specified address Error. This is the guide we used to setup EXIM: ...
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1answer
474 views

How \Deleted flag can be unset for all mails in cyrus-imapd mailbox?

I have a 5GB mailbox which I moved using imapsync. But somehow I messed up with --delete/--delete2 option and end up with almost all the messages having \Deleted flag set. I do not have delayed ...
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2answers
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Port decisions for email setup in 2016 (Ubuntu)

I have a new Ubuntu 14.04 LAMP server with the UFW firewall setup on DigitalOcean. My goal is to add email for use on my phone(iPhone) and laptop(via Roundcube). There is a lot of old information ...
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IMAP woes when moving to new Exchange

We've recently moved to a semi-outsourced Exchange farm, replacing our internal one. An application I've been asked to help troubleshoot uses IMAP to download some emails from the Exchange servers in ...
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1answer
1k views

Squid3 CONNECT imap.gmail.com:993 TCP_DENIED:NONE

I have the following configuration under squid.conf. However, when my Blackberry email client attempts to fetch new emails, etc. Squid access log show the following error: imap.gmail.com "CONNECT ...
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1answer
24 views

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 ...
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49 views

Thunderbird STARTTLS fails connecting to Cyrus-IMAP 2.2.13

Today all of a sudden my Icedove mail clients (38.7.0) ceased working using STARTTLS after I renewed the server certificate. Plain text IMAP works fine. The server logs STARTTLS negotiation failed ...
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1answer
9 views

Change Dovecot mail directory

I've set up a mail server with Dovecot over SSL. It is receiving emails and placing them in the directory: /home/*user*/Maildir/new I can view them in Vim. However, when I connect to the email via ...
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1answer
24 views

Ubuntu / CentOS - PHP5 imap ssl

I was wondering now, I have developed a Helpdesk System, than uses the PHP imap library to connect to configured mailbox's and "pull" the mails through and create tickets based on the content. But ...
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1answer
39 views

Is there anyway to use rsa certificate authentication with imapsync

We have an off-site warm standby backup host that I wish to periodically synchronise our imap server with using imapsync. I would like to know if it is possible to use RSA certificate authentication ...
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146 views

TLS1.2 not possible with iOS mail?

I have a dovecot server running that enforces TLS1.2 ssl_protocols = !SSLv2 !SSLv3 !TLSv1 !TLSv1.1 TLSv1.2 This used to work fine until someone tried to connect with an iPhone which complains that ...
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138 views

imap issue proxynotauthenticated

I am having serious issue during coexistence between exchange 2010 and 2013, authentication failed when attempting to connect through IMAP, I will write the environment and the logs in points so that ...
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1answer
73 views

Postfix/Dovecot Email Server (on Raspberry Pi) - Unable to configure POP3S connection with Gmail

I've been trying to configure my Raspberry Pi (Raspbian Jessie Lite) as a postfix/dovecot email server for my domain dominicgkerr.co.uk. Using a combination of the fantastic walkthroughs written by ...
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Using UNIX mail/mailx with a modern mail server (IMAP instead of mbox files)

I have a user who's an old time unix guy, he's been managing his email using the same tools (unix mail/Mail/mailx) since he started work at Bell labs in 1980. So he's got 20+ years of mail and ...
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2answers
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Can't login to dovecot using gmail as an email client

I've used this installation configure-email-server-using-postfix-dovecot When I try to use gmail as the email client (connecting to my server through port 993) I get this error Unable to establish ...
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1answer
48 views

Dovecot can't see user home dir

I'm testing my Dovecot configuration with mutt but without success. I have user user@example.com, I created home directory for him with maildirmake.dovecot command. But Dovecot cant cd to home ...
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Fast imap server for larger folders

I'm looking for an imap server that is fast with larger folders. Say 20'000-100'000 emails per folder. Currently I'm using dovecot, and opening a folder can take 10 seconds, and the HD light on the ...
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I added a mail account to Outlook using imap and now want to sync the agenda to iphone, is this possible?

Currently I have the mail account added to both Outlook and iphone using the same imap/smtp settings. When I add and verify the account on iPhone in "Settings -> Mail, contacts, calendars" the only ...
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6answers
10k views

Migrate IMAP account between providers - client access only

I have an IMAP E-Mail account with my old provider. I have a new, empty IMAP account with the new provider. Is there a tool or Thunderbird to migrate the E-Mail data from one account to another? I'm ...
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15 views

Email migration from a directly owned and operated server to a hosted service

My company sells subscriptions to some offline services, which include a complimentary email 1 Gb email account with POP/IMAP access. Roughly 2000 users use this service. Right now, we operate this ...
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45 views

Safest Means of Deleting Old Messages in Dovecot

So I'm trying to setup automated deletion of messages in Dovecot using a cronjob to run a daily doveadm expunge and weekly doveadm purge to clear out old messages with some given criteria (mostly ...
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1answer
39 views

Can't login to round cube new domain

I have multiple domains working on my mail server, and all are working normally, I configured new mail domain "example.ae" normally on mysql mail db, created new user, inbox was created on server, ...
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Configure Dovecot to only let localhost connect via imap

How do I configure the Dovecot message delivery agent to only allow imap connections from localhost?
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104 views

Postfix error: no SASL authentication mechanisms

I have searched many hours but can not fix the problem. Does anyone can show me the way to fix it? This is my postconf -n postconf: warning: /etc/postfix/master.cf: undefined parameter: ...
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1answer
138 views

reverse proxy for multiple SMTP / IMAP servers

Instead of giving our clients server name's like beta.example.com as IMAP / SMTP servers, we'd like to use smtp.example.com. We have a database of all domains / e-mail servers and corresponding mail ...
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2answers
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Turning on UFW stops my e-mail client functioning (both imap and smtp) even though they are allowed?

I am using ubuntu 10.04 on a VPS. Without enabling UFW everythign works fine - imap using port 143. And sends emails using smtp port 587. However, when I turn on UFW a lot of problems are ...
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1answer
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Dovecot Certificate Authentication

After implementing certificate authentication on Nginx web server, I would like to do the same on Dovecot mail server. The idea is to create your own CA and manage certificates (both issuing and ...
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Correct Namespace config for Sent/Drafts/Trash with dovecot

Dovecot seems to configure namespaces by default (conf.d/10-mail.conf and conf.d/15-mailboxes.conf) this way: # 10-mail.conf mail_location = mbox:~/mail:INBOX=/var/mail/%u namespace inbox { inbox ...
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How to view the IP of the connecting client in Domino 9 IMAP server?

I am running an IBM Domino 9.0.1 (64-bit) server on a Windows Server 2008 R2. The problem is that the IMAP server task is not displaying the IP address of the connecting client in the console and ...
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1answer
152 views

IMAP authentication issue with roundcube + postfix + mysql + ubuntu mailserver

This problem is driving me insane and I'm now stumped. Need some help please ;) I'm setting up a mail server on an Ubuntu 14 AWS EC2 instance using mysql backend, postfix MTA and roundcube webmail ...
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1answer
44 views

PHP CLI not loading IMAP extension

When I try to run a script that uses imap in my browser, it works fine (it is loaded from a Ubuntu 14.04 server on my network with the extension installed). However, when I try to use PHP CLI on said ...
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cyrus imapd broken after server restore from backup

I had to restore a vserver with a running installation of cyrus imapd from a 24h old backup. After that, imap clients are timing out and the log gets flooded with the following: tail ...
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2answers
31 views

Using POP3 and IMAP for same account

When using a mailserver I know that IMAP leaves all the mail in the server while pop3 downloads it and deletes it (sometimes after a few days, depending on the mail client configuration options). My ...
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1answer
158 views

Best practices to migrate IMAP mailboxes of thousands users using imapsync tool

I'm going to migrate IMAP mailboxes from Exchange 2013 to Cyrus with over 10k users. I plan to use imapsync as the tool for this. [root@centos65]# imapsync --version 1.644 I'm testing with 5 users ...
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2answers
95 views

Dovecot migration fails: “[…] specify separator […]”

I'm setting up a new dovecot server ("A") and I'm trying to migrate one mailbox from another IMAP server ("B", Dovecot as well). On new server A my dovecot.conf looks like this: […] mapc_host = ...
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39 views

Ubuntu machine user login authentication against google apps imap

Not to steal someone else's post, Dynamic UNIX users with IMAP, I thought I'd reask a 5 year old question with a little more detail. I have about 60 laptops that I'd like to run Ubuntu on and am in ...
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56 views

ActiveSync folder sync issues following import from IMAP

Currently we're running a Microsoft Exchange 2007 server on Windows Server 2008, with which we don't really have any particular issues with ActiveSync normally. In this case we've onboarded a new ...
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3answers
10k views

Which IMAP flags are reliably supported across most mail servers?

I am writing an application which reacts to emails sent to a mailbox. It retrieves the emails via IMAP. It will be deployed to a number of systems where I do not control the mail server configuration. ...
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2answers
4k views

How configure roundcube to work with imaps?

I recently installed Postfix, Dovecot to setup a mail server on my own VPS ( using this tutorial: Email with Postfix, Dovecot, Mysql) Imaps server uses port 993 for Authentication, and Postfix uses ...
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1answer
170 views

How to Configure Roundcube/Dovecot for *Effective* 2-Factor Authentication

There are several Roundcube plugins that provide two-factor authentication. However, the issue I now see is that I can still simply log in via IMAP/SMTP, without 2-FA (obviously). 2-FA is ...
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1answer
25 views

IMAP port permission (Python)

I'm writing a program to read emails from python when I execute below code it hangs in the last line import imaplib mail_server = "192.168.2.2" connection = imaplib.IMAP4_SSL(mail_server,993) I ...
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103 views

How to relay/forward mail from qmail MTA to Google Apps/Gmail?

I want to forward or similarly deliver mail for "user1@example.com" to a Google Apps mail account for "example.com" from the MX primary inbound SMTP server "example.com" (MTA is qmail). I want all ...