?
Solved

How to send signed email using the roundcube, dovecot, and postfix

Posted on 2014-12-23
4
Medium Priority
?
335 Views
Last Modified: 2014-12-30
I have Postfix, Dovecot, Roundcube, and mysql based on Centos 6.3 how can I set it up to send signed email?
0
Comment
Question by:Ashraf Hassanein
  • 2
  • 2
4 Comments
 
LVL 41

Accepted Solution

by:
noci earned 2000 total points
ID: 40517527
Web-based mail + the secret part of a certificate in general are not a happy combination.
The primary use of Web-Based mail (i.e. Roundcube) is that in can be used from a generic webserver (f.e. a hosted one) where you have no control over the underlying OS , hardware etc.

Those are bad places to leave the private part of certificates lying around. As you can loose them without knowing it.
And because the software needs a readable version of the pass-phrase that is available in the server too.
So basicly there is no valid use case to develop software for this, that is also secure.. (The basic premise why you would want mail encryption anyway.)

Signed & Encrypted email are safe because the underlying premise is that the passphrase never leaves the application that it is entered into.
0
 

Author Comment

by:Ashraf Hassanein
ID: 40517897
I believe I mixed alot of stuff together,  but to be more specific I want to be able to signed email only from rounscube (not encrypted ).
It more a small business email so I own the server and have a full control on it.
I that  possible.
0
 
LVL 41

Expert Comment

by:noci
ID: 40523516
Please define signing...:
The cryptographic variant is encrypting portion of the header that you "encrypt"/"hash" using a private/ public key pair so other ca verify you sent the mail. This needs the same pretext as encryption. (only you private key on the server) ... so see above.

Signing as in -- on a line with something beneath it...
That is easy. Go to settings, identity, and fill out the textbox for it. And mark it as html if that is needed.

Be aware to not send your autograph in a picture, otherwise anybody can photoshop that into any letter.
0
 

Author Comment

by:Ashraf Hassanein
ID: 40524755
Thank you for your clarifications in both posts, the first one explaind a lot
0

Featured Post

[Webinar] Kill tickets & tabs using PowerShell

Are you tired of cycling through the same browser tabs everyday to close the same repetitive tickets? In this webinar JumpCloud will show how you can leverage RESTful APIs to build your own PowerShell modules to kill tickets & tabs using the PowerShell command Invoke-RestMethod.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Stellar Exchange Toolkit: this 5 in 1 toolkit comes loaded with mega-software tool. Here’s an introduction to tools’ usage and advantages:
Last month Marc Laliberte, WatchGuard’s Senior Threat Analyst, contributed reviewed the three major email authentication anti-phishing technology standards: SPF, DKIM, and DMARC. Learn more in part 2 of the series originally posted in Cyber Defense …
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…
Suggested Courses
Course of the Month5 days, 4 hours left to enroll

601 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question