Mavericks broke IMAP in Mail, throwing bogus SSL error.

Well this is interesting. Until now I had no problems with the SMTP servers - only IMAP (incoming) was not working.

With your method I came accross some strange behaviour

IMAP is tested and passes the test - greatest success so far! But when it comes to SMTP it just says "an unknown error occured" (translated to english by myself - system runs on german)

Mail does then not respond anymore and I get to see the famous beachball for minutes. Finally decided to kill Mail via activity monitor.

That is strange... You should be able to open System Preferences > Internet Accounts and remove the new one that was just added then see if Mail App starts working again.

I created a new user and tested your way again. It seems as Mail does not check IMAP settings in the first place but does just pass me over to the SMTP settings. After entering them - I get the Error message. But at least not a beachball anymore.

https://www.dropbox.com/s/tnlgz8dum6t3i56/Bildschirmfoto%202013-10-26%20um%2019. 59.58.png

If I may ask: on what ports are your IMAP accounts running? 143? 993? 110?

Sure, 993 SSL.

Hi Taszyn!

I have exactly the same problem with IMAP, on the same server (nazwa.pl). I see the same strange logs:

READ Oct 29 10:39:08.314 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:ppg.nazwa.pl -- port:993 -- socket:0x6080004cdc80 -- thread:0x61800087fc00

.860dLOGIN BAD Error in IMAP command received by server.

Did you manage to solve the issue by now?

Wojtek

PS. The strange thing is that while IMAP does not wotk on my MacBook, it perfectly runs at home on my iMac whih is also upgraded to Maverics. :-o

Same problem. Was working fine two days ago. Now all mail accounts (gmail and iCloud) are offline because of 993.

The same accounts on the same network (actually on the same laptop) work in Snow Leopard.

The same accounts work on iPad/iPhone (iOS 7.x)

The same accounts work in Postbox (http://www.postbox-inc.com) running under Maverick.

Cheers,

Andrei

Hi there !

I suspect the issue lies with the new keychain syc feature.

This following worked for me and several others with the same problem.

In the prefs window find iCloud and deactivate the keychain option.

This worked for me only after i restarted the computer. You may also need to Rebuild your mail boxes

good luck

Michael

Disabling iCloud keychain did solve it for me. Tyvm

the problem is cured, I had the same symptom here, with Mail for Mavericks and also with Mailmate.

Disabling iCloud keychain did solve it.

best regards

Stefan

I have the same issue.

Unfortunately, the mail update hasn’t solved my problem. Im on a Macbook Air. My gmail powered accounts are all running OK but my IMAP account hosted elsewhere refuses to send. I keep getting an error:

Mail was unable to connect to server “mail.xxxxx.me” using SSL on the default ports. Verify that this server supports SSL and that your account settings are correct.

I have tried all settings with SSL on and off. With default ports changed to custom port. Authentication with password and without. get a different error each time I change settings eg

The server “mail.xxxxx.me” refused to allow a connection on the default ports.

The same account is working perfectly on my iMac running 10.8. The issue only started when I upgraded the Air to Mavericks.

NB: I have looked at Keychain settings for iCloud and neither Mail nor Keychain have been activated.

I find (thanks to my friend Luca) a workaround that solve the problem of IMAP connection in Mail.app.

My IMAP is defined with an IP adress (number). Mavericks (I think) want a name for your IMAP.

So I did these steps:

1. login ad admin
2. open terminal
3. cd /etc
4. sudo nano hosts
5. ad a line on host file (I added it on the top): YOUR_IP_ADRESS NAME_OF_YOUR_IP_ADRESS (for example: 192.168.1.1 myadress.com
6. Save it ad exit (^o, return and ^x).
7. Open Mail.app and change YOUR_IP_ADRESS with NAME_OF_YOUR_IP_ADRESS.
8. save, close Mail and open Mail
9. Mail will work!

I tried this workaround on my iMac and MB Air and it works fine!

Thanks to Luca!

Here the how-to in italian.

Exact same problem here, after installing latest Mavericks update to supposedly fix the SSL vulnerability.. both of my IMAP mailboxes using SSL on port 993 have completely stopped working. If I change them to use non-SSL in the settings on port 143 they work again fine... but this is probably even more insecure than using SSL with the vulnerability in the code. Ridiculous!

For my also IMAP via SSL problem was not solved. Is it really so hard to implement SSL ?! Especially that before Mavericks everything was wotking correctly... I'm using one of biggest provider in Poland - nazwa.pl

Apple - please repair it finally - it is kind of a shame, don't you think?

Some debug info from connection doctor. Basically error message remains the same as before:

READ Mar 02 16:55:21.977 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:balrog.nazwa.pl -- port:993 -- socket:0x6100002c2140 -- thread:0x61800086a1c0

.75bLOGIN BAD Error in IMAP command received by server.

It suggests that there is something wrong with authentication, but switching IMAP to non-SSL standard 143 port solves the problem and Mail.app is able to authenticate properly. So it is NOT problem with authentication, but probably some error in SSL/IMAP implementation 😟. Please fix it finally!