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Questions tagged [imap]

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

E-mail clients using IMAP often leave messages on the server until the user deletes them. This allows multiple clients to manage the same mailbox - useful for support help desks for example.

IMAP 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)
  • Post Office Protocol (POP3)
  • File Transfer Protocol (FTP)

IMAP on Wikipedia

603 questions
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Nginx + mail open ports vulnerability

I'm just thinking out loud here and wondered if i have to open up ports (inbound) to still use my mail. Isn't it possible to redirect trafic lets say imap or pop3 through a subdomain (imap.domain.tld or pop3.domain.tld) hosted at port 80 or 443 and…
Baklap4
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Setting up aliases with Postfix and Courier-IMAP

I have set up a Postfix mail server which uses Courier in order to provide an SMTP service. On my server there is a user called joe. I used alias maps to make mail to test@example.com redirect to joe using test: joe in my /etc/aliases. Seeing as…
Zak
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Deny shift delete on Dovecot IMAP

i have a quick question about Dovecot ACLs, What i intend to do is prevent users from deleting emails, I was able to change the permissions of the 'Trash' folder so users cannot purge deleted emails so all is good. But, users on outlook can do a…
Ahmad
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Is it necessary to have 143 port enabled to use the 993 port for an IMAP(SSL) connection?

I have an email server running with Dovecot, and while trying to manage my email with Thunderbird I'm getting a weird error: If I enable the port 143, and 993, Thunderbird works fine (either using 143 or 993). But when I disable 143 (To always force…
user236479
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The greeting from an IMAP server — format?

I'm trying to understand the specification of IMAP found at INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 (RFC3501) Does the greeting from a server always have the following format? * OK something doesn't matter what That is, does it start with…
Oskar K.
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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 the description of the issue will be clear for…
naji
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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 server's. Is there a way to use nginx (or another…
Ueli
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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 /var/log/mail.info: Dec 24 20:59:16 h2229778 cyrus/master[3570]:…
gmyny
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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 and total 134 mails ( most are plaintext + one 9MB…
cuongnv23
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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 = mailserver.ZZZZZZ.com imapc_user =…
basbebe
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Google Apps mail "Too many simultaneous connections" error

I'm experiencing the problem described here, in Outlook 2007 with Google Apps IMAP: http://mail.google.com/support/bin/answer.py?answer=97150&topic=12816 The thing is, I have no idea how the connections might have maxed out. The account in question…
doctororange
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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 (effectively) useless here. I thought I could solve this…
Jocbe
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IMAP Proxy for a Server on Windows 7

I have configured a set-up of Hmailserver and Horde Groupware Webmail Solution on my test server which runs Windows 7. Everything is up and running smoothly but I'm encountering two minor issues: In order to optimise the performance of webmail I…
Prabal Kajla
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Can not connect with imap_open but openssl s_client works

So after 2 days of trying all the solutions I could find that seemed to apply, I am still scratching my head. There must be something I am missing. I am trying to connect to a postfix/dovecot mail server with php imap_open() within SuiteCRM (it…
AllanD
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IMAP Account Migration/Synchronisation

I was wondering if anyone knew of any easy way to synchronise and then migrate an IMAP account between two hosting accounts? I have SSH access but within jailshell (cpanel/WHM access also), but no root access to the server. Host may be willing to…
Asciant
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