Author Topic: Pop3 and Imap  (Read 12889 times)

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Walker

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Pop3 and Imap
« on: October 28, 2003, 07:01:24 PM »
Can anyone tell me if there are any considerations when changing some of my Pop3 settings to Imap4?.

I'm continuing to use Pop3 for most of my accounts but am changing to Imap on others.

Do I need to change anything in Avasts setup to protect both types of protocol?.

Thanks for any info.

Offline Vlk

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Re:Pop3 and Imap
« Reply #1 on: October 28, 2003, 10:41:54 PM »
It should work the same. The only catch is that IMAP is widely used with SSL authentication (much more often than POP) but this does not work with avast. Only the basic (enuncrypted) authentication/communication is supported by the avast mail scanner.
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Offline shgoh

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Re:Pop3 and Imap
« Reply #2 on: October 29, 2003, 07:16:09 AM »
It should work the same. The only catch is that IMAP is widely used with SSL authentication (much more often than POP) but this does not work with avast. Only the basic (enuncrypted) authentication/communication is supported by the avast mail scanner.

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Offline Lisandro

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Re:Pop3 and Imap
« Reply #3 on: October 29, 2003, 12:00:15 PM »
It should work the same. The only catch is that IMAP is widely used with SSL authentication (much more often than POP) but this does not work with avast. Only the basic (enuncrypted) authentication/communication is supported by the avast mail scanner.

Will this feature implemented in the future?  ;)
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Walker

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Re:Pop3 and Imap
« Reply #4 on: October 29, 2003, 02:37:19 PM »
The only catch is...

Thanks Vlk,

So far, my IMAP accounts *seem* to work without ssl security protocols. In this case is Avast giving the same protection as with Pop3?

Could you enlighten me  ;). Are these encryption issues related to Avast limitations or technicalities with IMAP.... ie should I hop over to the 'wishlist'  :) ;)

Walker.
« Last Edit: October 29, 2003, 02:39:33 PM by Walker »

Offline Vlk

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Re:Pop3 and Imap
« Reply #5 on: October 29, 2003, 03:31:43 PM »
Quote
Could you enlighten me  . Are these encryption issues related to Avast limitations or technicalities with IMAP.... ie should I hop over to the 'wishlist'    


No, I don't think it's (technically) doable, at least in the way the mail scanner works now. SSL is all about security and preventing things like man-in-the-middle and this is exactly how the avast mail proxy behaves...

IMHO it is possible to make a SSL-enabled scanner but it would require a complete rewrite, and a lot of other nuisance stuff (such as access to the keys/certificates etc)..

Vlk
« Last Edit: October 29, 2003, 03:44:07 PM by Vlk »
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Offline pekka

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Re:Pop3 and Imap
« Reply #6 on: October 29, 2003, 03:42:16 PM »
Yes, Avast does not support SSL, but with Stunnel You can easily encrypt all email traffic.

My pop "chain": Outlook- K9-Avast-Stunnel(SSL)-ISP with SSL supported pop3 server.
My smtp "chain": Outlook-Avast-Stunnel(SSL)-ISP with SSL supported smtp server.

Stunnel is GPL, and I have used it about one year with no problems!

Offline Lisandro

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Re:Pop3 and Imap
« Reply #7 on: October 29, 2003, 08:39:52 PM »
Stunnel is GPL, and I have used it about one year with no problems!

Could you please post a link to this application?  ;)
Will it encript the traffic just for the sender or either for whom the email was sent (I mean, decript)?  ;)
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Offline pekka

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Re:Pop3 and Imap
« Reply #8 on: October 29, 2003, 10:24:12 PM »

Walker

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Re:Pop3 and Imap
« Reply #9 on: October 30, 2003, 12:35:55 AM »
Thanks Vlk, thanks Pekka,

Vlk, is Imap without ssl getting the same protection with Avast as it is with Pop3?. Am I allowed to put it on the wishlist... just for the long winter days, when you guys have got nothing to do  :) ;)

Pekka, never really had much to do with Imap, it's just been a check box I've left empty when using Pop3  ;). Am I right in thinking that the only function of ssl is to encrypt the login details (username/p'word) during transmission?. Also, do you use a normal ISP that has implimented ssl on pop servers?.... sorry to be curious...  :)

Walker.

Offline pekka

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Re:Pop3 and Imap
« Reply #10 on: October 30, 2003, 09:33:20 AM »
With SSL all traffic between You (Your email client program that is) and Your ISP's email server is encrypted. I don't use IMAP myself, but I think that Stunnel does the SSL trick (with Avast) for You.

Stunnel decrypts the data for Avast to scan (and encrypts the login /password when sending to ISP through Avast scanner).

I can use pop/imap/smtp  with or without SSL, my ISP has both systems working.
This is very common, at least here in Finland.

Offline Lisandro

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Re:Pop3 and Imap
« Reply #11 on: October 30, 2003, 12:04:27 PM »
Thanks pekka, I'll take a look on Stunnel...  ;)
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Walker

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Re:Pop3 and Imap
« Reply #12 on: October 30, 2003, 12:28:32 PM »
With SSL all traffic between You (Your email client program that is) and Your ISP's email server is encrypted.

Thanks Pekka,

I did check Stunnel and think you are spot on with your description.

It comes to my mind that it is good to have, say your login encrypted but not too much other use if message content is only encrypted between the local and remote hosts..  ie apart from the login, the text of any message is still travelling around the rest of the network (internet) un-encrypted.

When I really need to, I use PGP, I suppose SSL just adds the login security.

Thanks very much for the info., it's interesting.

Walker.

Offline Lisandro

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Re:Pop3 and Imap
« Reply #13 on: October 31, 2003, 01:55:10 AM »
With SSL all traffic between You (Your email client program that is) and Your ISP's email server is encrypted.

Thanks Pekka,

I did check Stunnel and think you are spot on with your description.

It comes to my mind that it is good to have, say your login encrypted but not too much other use if message content is only encrypted between the local and remote hosts..  ie apart from the login, the text of any message is still travelling around the rest of the network (internet) un-encrypted.

When I really need to, I use PGP, I suppose SSL just adds the login security.

Thanks very much for the info., it's interesting.

Walker.

Hey Walker, do you suggest any application(s) to encrypt all the message (not just a login security as you said)? Remember that a Freeware is better...  ;D
The best things in life are free.

Walker

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Re:Pop3 and Imap
« Reply #14 on: October 31, 2003, 02:01:35 AM »
Hey Walker, do you suggest any application(s) to encrypt all the message (not just a login security as you said)? Remember that a Freeware is better...  ;D

Tech,

The standard for many years has been PGP (Pretty Good Privacy) and in most cases this is a freeware application.

Try looking at www.pgp.com or www.pgpi.org alternatively a google should find you many references.

Walker.