Solved

External mail clients (Postbox 3.0.9) can not send email 550 5.7.1 Client does not have permissions to send as this sender

Posted on 2014-02-20
4
922 Views
Last Modified: 2014-02-28
Hi There,

Exchange 2010 environment.

External users can't not send email using Postbox (mac client)

Internal users are not affected just external users.
This was working perfectly fine in the past.

The error is: 550 5.7.1 Client does not have permissions to send as this sender

The same external users can send emails using Smartphone (Iphones) but not via email client.

Thanks, Rod
0
Comment
Question by:Rod_2012
  • 2
4 Comments
 
LVL 13

Expert Comment

by:Andy M
ID: 39873222
Hello

What connection method is the Postbox software using to connect to the Exchange server? POP/SMTP, IMAP, EWS, OWA?

iPhones and Email clients connect in different ways to the exchange server. The phones use Activesync where as the email clients use one of the above connection methods. The fact that the phone works indicates the account is working with regars to sending/recieving email so the issue will be with the connection methdo used by the Mac client.
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 39873543
Hello,

Make sure the client is set to authenticate before sending.

-JJ
0
 

Accepted Solution

by:
Rod_2012 earned 0 total points
ID: 39881233
thank you for the comments.

I managed to solve the problem by giving full permission the mailbox user itself.
0
 

Author Closing Comment

by:Rod_2012
ID: 39894355
I managed to solve the problem by giving full permission the mailbox user itself.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Lotus Notes – formerly IBM Notes – is an email client application, while IBM Domino (earlier Lotus Domino) is an email server. The client possesses a set of features that are even more advanced as compared to that of Outlook. Likewise, IBM Domino is…
The new Gmail Phishing Scam going around is surprising even the savviest of users with its sophisticated techniques.
how to add IIS SMTP to handle application/Scanner relays into office 365.
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question