Our company using a local hosting service, everything seems ok until we try to send a mail to a customer which its server needs "requires authentication before sending mail from a locally hosted domain"
---------------------------------------------------error log---------------------------------------------------------
the full error log is; <x@x.com>: host xhost.com [xx.xx.xx.x] said: 551 This mail server requires authentication before sending mail from
a locally hosted domain. Please reconfigure your mail client to
authenticate before sending mail. (in reply to MAIL FROM command)
Reporting-MTA: dns; smtp.mymailserver.com
X-Postfix-Queue-ID: 9CC261980F7
X-Postfix-Sender: rfc822; myusername@mydomain.com
Arrival-Date: Fri, 3 Jan 2014 09:26:27 +0200 (EET)
Final-Recipient: rfc822; x@x.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; xhost.com
Diagnostic-Code: smtp; 551 This mail server requires authentication before
sending mail from a locally hosted domain. Please reconfigure your mail
client to authenticate before sending mail.
---------------------------------------------------error log---------------------------------------------------------
So, problem and solution is clear. I need to provide "My Outgoing Server needs SMTP Authentication" just as Windows based Outlook. But in Mac based Outlook there s no option for this. After Google research;
What i tried;
- Outlook>Tools>Accounts>More Options ;
Authentication : User Name and Password Selected
User : *** Email address is removed for privacy ***
Password : Ok
Unqualified Domain : Left it Blank.
Nothing Changed.
- Trying different ports 25, 587 exc. Nothing Changed. SMTP login failed also. Only works with 587.
- Trying to sent with SSL or without SSL on Outgoing Server. Nothing Changed. No difference.
- Trying to send mail 3 different clients. Apple Mail, Outlook 2011 and Mozilla Thunderbird. Nothing Changed.
- Trying to login with different username as; myusername or *** Email address is removed for privacy ***. Nothing Changed.
- Trying to send with free email clients like gmail, hotmail exc. It works! But we cant send email via these services to our customers of course.
I m run out of ideas, ma i find a bug or solution is still out there? Any ideas will be very welcomed.
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