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** [bugs:#1372] [libcurl-Mac]SMTP cannot select AUTH option and auth with DIGEST-MD5 failed**
**Status:** open
**Created:** Fri May 16, 2014 06:49 AM UTC by Loik
**Last Updated:** Fri May 16, 2014 06:49 AM UTC
**Owner:** nobody
Hi All,
I'm using libcurl with Mac OSX and load the dynamic library from xcode SDK.
We set a Mac OSX server and it support LOGIN, PLAIN, CRAM-MD5 and DIGEST-MD5, when we execute the libcurl with smtp code under 10.7 /10.8, libcurl use CRAM-MD5 to do auth but use DIGEST-MD5 under osx 10.9.
In 10.7/10.8 the CRAM-MD5 always return 
> AUTH CRAM-MD5
< 334 PDQ2Mzg0Li1kOUF3R09CSXVRbjdlNjhiLi0xNDAwMjIyMTkzLUAtQnJ1Y2VzLU1hY0Jvb2stUHJvLmxvY2FsPg==
> QnJ1Y2UgNTgwNDVkODBiM2UzOWEzMDRiYTBjM2VjNzcwNmU5MDY=
< 235 Authentication successful
But under 10.9 libcurl use DIGEST-MD5 and always failed.
I found the flag curl_easy_setopt(curl, CURLOPT_USERPWD, "username:password;option");
it can select the AUTH mode, but it not working by my environment, I already  set AUTH=PLAIN or AUTH=CRAM-MD5 but libcurl still auth with DIGEST-MD5.
My question is 
1. Why curl_easy_setopt(curl, CURLOPT_USERPWD, "username:password;option"); cannot select AUTH mode.
2. Why libcurl 7.30.0 cannot support DIGEST-MD5
The DIGEST-MD5 failed message as below
My test platform
OSX 10.7 
xcode 4.1 with libcurl 7.21.4
OSX 10.8
xcode 4.6 with libcurl 7.26.0
OSX 10.9
xcode 5.0 with libcurl 7.30.0
Server is  OSX Server 3.0.1
* About to connect() to 192.168.208.214 port 25 (#0)
*   Trying 192.168.208.214...
* Adding handle: conn: 0x101016000
* Adding handle: send: 0
* Adding handle: recv: 0
* Curl_addHandleToPipeline: length: 1
* - Conn 0 (0x101016000) send_pipe: 1, recv_pipe: 0
* Connected to 192.168.208.214 (192.168.208.214) port 25 (#0)
< 220 Bruces-MacBook-Pro.local ESMTP Postfix
> EHLO afp19216820489
< 250-Bruces-MacBook-Pro.local
< 250-PIPELINING
< 250-SIZE 10485760
< 250-VRFY
< 250-ETRN
< 250-STARTTLS
< 250-AUTH LOGIN PLAIN CRAM-MD5 DIGEST-MD5
< 250-ENHANCEDSTATUSCODES
< 250-8BITMIME
< 250-DSN
< 250-BINARYMIME
< 250 CHUNKING
> AUTH DIGEST-MD5
< 334 cmVhbG09IkJydWNlcy1NYWNCb29rLVByby5sb2NhbCIsbm9uY2U9ImQ4alZjYlE1TVNGbUxuUUFYY1pyM2NrNXk4VDYzSXUiLHFvcD0iYXV0aCIsYWxnb3JpdGhtPW1kNS1zZXNzLGNoYXJzZXQ9dXRmLTg=
> dXNlcm5hbWU9IkJydWNlIixyZWFsbT0iQnJ1Y2VzLU1hY0Jvb2stUHJvLmxvY2FsIixub25jZT0iZDhqVmNiUTVNU0ZtTG5RQVhjWnIzY2s1eThUNjNJdSIsY25vbmNlPSJmNjNjNDA5YSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwL0JydWNlcy1NYWNCb29rLVByby5sb2NhbCIscmVzcG9uc2U9NTQzYTkzMjY0NWY5OThmYTdjYTk4NmU4ZmY2NTFjMGQ=
< 535 Error: authentication failed
* Authentication failed: 535
* Closing connection 0
curl_easy_perform() failed: Login denied
Program ended with exit code: 67
Thanks a lot.
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