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15

There is no difference in the security between the two options. SSL/TLS opens an SSL/TLS connection first, then begins the SMTP transaction. This must occur on a port that does not have a non-SSL/TLS SMTP server already running; it is impossible to configure a single port to handle both plain text and encrypted connections due to the nature of the ...


8

The answer, based on the STARTTLS RFC for SMTP (RFC 3207) is: STARTTLS is less secure than TLS. Instead of doing the talking myself, I will allow the RFC to speak for itself, with the four relevant bits highlighted in BOLD: A man-in-the-middle attack can be launched by deleting the "250 STARTTLS" response from the server. This would cause the ...


7

Try using imapsync, available also as a standalone imapsync.exe. Free, open but not gratis from the homepage.


7

I had a very similar problem when I started using server-side filters to deliver mail directly into folders rather than into my inbox. The solution I found was to tell Thunderbird to explicitly check each folder for mail. To do this right-click on the folder, go to "properties", then under the "General Information" tab check the bottom checkbox labled ...


4

I had a similar problem - through some quirk a bunch of emails disappeared from my IMAP server, but remained in the INBOX and Sent files on the local drive. I was unable to coerce Thunderbird to restore those emails onto the IMAP server directly, so I went with another approach: Create a POP3 account with the same credentials as the IMAP one, but make sure ...


4

Message headers (which the subject is one of) can't be encrypted. If the subject is sensitive, leave it blank. http://www.mozilla-enigmail.org/forum/viewtopic.php?f=3&t=328#p2724 This is an ever coming back request and my answer is always the same: Enigmail implements/supports the standards available for encrypting&signing emails. These are ...


4

You're probably missing the intermediate certificate. AFAIK Dovecot does not have a chain certificate option as you have in for instance Apache, you need to concatenate the intermediate certificate into a single file with your public certificate: The signed certificate for your domain Intermediate CA cert Root CA cert Get correct intermediate ...


3

Port 465 is for SMTPS, it uses SSL immediately when establishing the connection and then uses the same SMTP protocol as normally found on port 25 after the secure connection is established. You test from the commandline with: openssl s_client -connect smtp.example.com:465 Using telnet to connect to port 465 will result in an error message in the log ...


3

First thing I would do would be to update the client. What is happening here is an attempted protocol downgrade. That is, the client is trying to downgrade from TLSv1 to SSLv3, or from any higher version of TLS to a lower version. (Exactly which is not clear from the logs, and would require more verbose OpenSSL debugging to be enabled, but that particular ...


3

Use a mailbox synchronization tool (for example imapsync) or a service (for example migrationwiz) and do a initial synchronization of all the mailboxes to the new server. Then change the dns records over to the new box. After DNS change has propagated, do another delta-sync of all mailboxes to catch the changes that have been made to the old mailbox while ...


3

Here's how to create Thunderbird.msi and Firefox.msi with WiX: http://www.klaus-hartnegg.de/gpo/msi_firefox_wix.html http://www.klaus-hartnegg.de/gpo/msi_thunderbird.html


3

You've misunderstood IMAP. Every IMAP command has to be preceded with an identification token, so instead of LOGIN domain/user/mailbox password the KB article you quoted advises you to use ? LOGIN domain/user/mailbox password (note the ? prepended to the LOGIN command - which is the mentioned token). BTW: you do not necessarily have to use ...


3

As many are fond of saying: "Nuke it from orbit" Remove all internet connectivity, backup important files (even those can't be trusted fully though) and DBAN that thing.


3

In the past, I've found uw-imap can be very brutal on system performance if there is a lot of emails in individual mail folders. What is the user's mail count like? What about mailbox sizes? Have you tried moving some of the messages around? Have you tried another imap client to eliminate it being an issue there? Do the users have login access to the mail ...


2

Taking into account that: Firefox and Thunderbird doesn't install anything to system folders other than Program files *. All of the configuration is stored in the profile folder (they don't use the Windows Registry for user settings). You can copy a profile from one computer to another, even with different versions of Windows, and it works fine (we just ...


2

You could use something like fetchmail or getmail to download your messages, and then use mairix to search them, lightning fast and got a lot of options to refine your searches. mairix. Cygwin got a mairix package for easy installation.


2

IMAP only deals with folders of RFC822 messages. There's no standard for contact storage on the server. That said, I believe Exchange makes contacts available via its IMAP server in a non-standard fashion. I am not aware of a library that makes it easy to use this information. Most desktop IMAP clients allow you to use an LDAP directory to augment your ...


2

As Zypher commented, according to https://wiki.mozilla.org/Thunderbird:Autoconfiguration (emphasis mine): Try to find the config at the Mozilla server (if the email provider does not provide the configuration) Fetch https://live.mozillamessaging.com/autoconfig/emailaddressdomain , e.g. https://live.mozillamessaging.com/autoconfig/example.com . ...


2

IMAP and POP are not the same! POP is a transfer protocol, pulling e-mail from the server to the client. IMAP is a synchronization protocol, keeping e-mail on the server, and usually keeping a local cache version. IMAP has a two stage delete, though most clients don't separate them. They are: Mark as Deleted, and Purge Deleted. Like I mentioned, most ...


2

I believe your problem lies in using a non standard port. RFC 4409, RFC 3207, and RFC 2476 may help you. Almost all mail routing (at least as much as I've dealt with it) is done on port 25 using TLS over standard SMTP, and the clients probably won't send on another port unless you tell it to. There's also some info from this site: Port 465 shows up ...


2

Mirroring an APT repository is certainly possible and there are many different procedures to do it. You could do something as simple as a recursive wget to grab the contents, and then server it with a local web server. But there are also many tools already available to do this as well. You could use a tool like apt-mirror and so on. Just do a search for ...


2

I would try logging a session with wireshark to check for network problems (rst, ...). Maybe you could try using pop3s instead of pop3 as a broken router/antivirus/... could potentially corrupt a connection.


2

You have confirmed above that more has changed than merely the IP address: specifically, the new network onto which the VM has been moved is behind a CISCO ASA firewall. Those firewalls do what they describe as "protocol fixup", which in the case of SMTP means messing with the information that's passed at layer 4. By telnetting from your client to the ...


2

I could solve the problem by changing the url, Add port 8008 to it. http://frontendwin.org:8008/dav/calendars/user/myanez/Default/


2

SF problem with SU solution :D Ensure thunderbird computer can't connect to IMAP server (turn off wifi/pull the LAN cable). You don't want to Thunderbird synchronize itself with outdated backup. Run Thunderbird. While offline, copy new email from IMAP account in Thunderbird to Thunderbird Local Folder. It will backup the email to your computer. Connect ...


1

Looks like a problem with /etc/ssl/certs/dovecot.pem Check that the file exists and Dovecot has permission to read it, or disable the SSL functionality. On my Ubuntu machine, dovecot.pem is in /etc/dovecot, with user root and group dovecot.


1

Dovecot package normally delivers a wrapper script /usr/share/doc/dovecot-<version>/mkcert.sh. Try it to generate your self-signed certificate.


1

Let's take a look at the example of E-mail header you gave us. The e-mail scored 6.63 most of which comprised by: DNS_FROM_AHBL_RHSBL=2.699 - this means your e-mail tested positive the Abusive Host Blocking List test. RCVD_IN_PBL=3.335 - per this page the e-mail was received via a relay in Spamhaus PBL. RCVD_IN_RP_RNBL=1.31 - per this page the last ...


1

Solved my issue. I still not sure why this worked however I installed roundcube, configured it for both domains, After that I was able to hit the sitename roundcube URL and sign in and send email to gmail without going to spam,


1

You have to use doveadm utility to add manually copied messages to the maildir index: doveadm [-Dv] index [-S socket_path] -u user [-q] [-n max_recent] mailbox Further reading can be found here: http://wiki2.dovecot.org/Tools/Doveadm/Index



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