SMTP CONNECTION ERROR

I installed the program. pop3 and smtp server settings to be made​​. Here we use the smtp server port number 587 instead of 25. server requires a login. At the same internet connection, and MS Outlook and Mozilla Thunderbird installed on the same computer. Outlook and Thunderbird e-mail to get delivered without a problem. Pop3, smtp server works fine, but can not be accessed, however, on emclient. The error message says the user name or password is incorrect. On top of that I change the password on the server again. I’m testing it again no problem with Outlook and Thunderbird. But it still does not work emclient. Here is a sample account and have set up. What is the solution suggestion?
CONTACT: gzihar@gmail.com

email account: deneme@firatoto.com.tr
pop3 server: port 110 mail.firatoto.com.tr
SMTP server port 587 mail.firatoto.com.tr
User Name: deneme@firatoto.com.tr
password: “PLEASE ASK BY EMAIL.”

logs;

SMTP S: 220 MAIL-ST-3.markum.net ESMTP MailEnable Service, Version: 4.26–4.26 ready at 09/13/12 00:24:47
SMTP C: EHLO [10.0.0.94]
SMTP S: 250-MAIL-ST-3.markum.net [88.235.201.184], this server offers 5 extensions
SMTP S: 250-AUTH NTLM CRAM-MD5 LOGIN
SMTP S: 250-SIZE 20971520
SMTP S: 250-HELP
SMTP S: 250-AUTH=LOGIN
SMTP S: 250 STARTTLS
SMTP S: 334 TlRMTVNTUAACAAAAFAAUACAAAAAFAgAAASNFZ4mrze9NAGEAaQBsAEUAbgBhAGIAbABlAA==
SMTP S: 504 Invalid Username or Password

Hello,
could you please send me the password directly at wilson@emclient.com? Thank you.