On 24 Jun 2012, at 21:20, Christian Rößner wrote: >>> I have an interesting problem: I am building dovecot packages for Ubuntu >>> since 10.04. Never had bigger trouble with it. Now since 2.1.6 or 2.1.7 (I >>> can not say more precisely), Thunderbird 10ESR and Outlook 2010 can no >>> longer use 143/TLS correctly. Automx delvers 143/TLS and Outlook tells me >>> that it can not create a secure connection. I changed automx to use 993/SSL >>> and everything works. Under Thunderbird 10ESR, I get a box that tells me >>> that I need to change settings. When I sent mail, TB told me that it could >>> not copy the mail to the sent folder. I also changed to 993/SSL and >>> everything is perfect. >>> >>> At the other and, Apples Mail.app and iOS devices work perfectly over >>> 143/TLS. So my guess is that it has to do with OpenSSL. Did something >>> change in dovecot concerning TLS? Can I change options in the built process? >> >> What was the Dovecot version you were using previously which worked? > > I am not sure which version worked. My best guess is 2.1.4 or 2.1.5, because > I skipped 2.1.6. But 2.1.6 has the same issues, as my friend Uwe did report > the same issues with that one. > > @Robert: I am talking about Ubuntu 10.04, so this can not be a problem with > openssl itself, as that did not change
I've seen problems with all kinds of clients and servers, even with Dovecot 1.x where TLS/Auto settings fail and I simply always instruct end users to explicitly choose 993/SSL to get a good TLS connection reliably. It seems like it might not be so version-specific or even anything wrong at the server end. James.
