E-Mail SMTP Port 587 with secure authentication

Avast Free Antivirus / Premium Security
1

Hi everybody,

Great: Avast 5 supports SSL protocol for email.
Bad: The only way to have an SSL-access to my freenet.de mail account is via port 587 AND SECURE AUTHENTICATION. But the SSL settings of Avast 5 don’t have an option for secure authentication.

If I set the SSL settings in Avast to port 587 and SSL I receive the “SSL_connect error 336031996”, no matter whether the server settings in Thunderbird are with or without secure authentication.

No SSL! Only port 25 and TLS is possible.
Or is there a way I don’t know?

2

How did you set TB?

SSL = off, standard port + secure auth

Should work.

Can you send a screenshot of your TB imap/pop3 and smtp settings?

3

This is pop settings… (click to enlarge)

4

…and smtp:

5

bege,

Along with the above from Zyndstoff, take a look at the following from avast! support:
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=458

6

@Zyndstoff
(Thank you for the pm, I forgot to check “notify me of replies”. Sorry for the late answer.)

Problems occur only with SMTP. Secure POP works fine.

The settings in Thunderbird are exactly as in your screenshot. As said before, whether secure authentication is checked or not, I receive the error message when sending a message to that account.

7

Is the smtp-setting in mailshield correct?

Try
“SMTP” “587” “TLS”
and
“SMTP” “25” “TLS”

in mailshield. If it is not there, add it.

Leave TB to 25, no SLL, no TLS, sec auth checked.

One of the above should work

8

Both of the above work, but 587 SSL doesn’t work. The provider allows both SSL and TLS.
(SMTP 25 TLS doesn’t need authentication)
Seems, like I have to live with TLS, port 587 and authentication - better than nothing anyway.

Thank you very much :slight_smile:

9

587 SSL doesn’t exist, port 587 can use either no encryption or TLS . If you want to use ssl on smtp, use port 465.

10

If that is true, the information of the e-mail provider is wrong (587 with SSL). So this seems to be the reason why it doesn’t work.
Thank you for that hint. :slight_smile:

11

Then change it to TLS using the drop down menu, see image example of the drop down list.

12

Sure, I did already,
thank you very much.

By the way, thanks to the help of all those who answered and posted screen-shots, this has became a good guide for anyone else who wants to use port 587 with secure authentication. :smiley: