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Outlook 365 Exchange server configuration

I have an ASP application. I am emailing invoices and quotations to the customers. It was working before (I was using my hosting server SMTP server). But I have problems to send emails to the email addresses which works on Outlook 365 Exchange. I started to use Outlook 365 Exchange server SMTP for sending the emails (I updated the MX records to Outlook 365 Exchange), and I can send emails to the customers which their emails are working on Outlook 365 Exchange, but not to anybody.

I receive below message when I am sending emails.

""""

The server rejected one or more recipient addresses. The server response was: 550 5.7.64 TenantAttribution; Relay Access Denied [[login to view URL]]

""""

Briefly I need some settings on my Outlook 365 Exchange server. (Exchange Hybrid Deployment Configuration, Email Flow, Connectors, Outbound settings end etc.)

or a new working ASP code for sending emails.

Script can be with ASP or ASP.NET (I need help for integration the code in my ASP application)

PLEASE ONLY VERY CONFIDENT AND EXPERIENCED PROGRAMMERS REPLY.

Taidot: Active Directory, DNS, Microsoft, Microsoft Exchange, Windows Server

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Tietoa työnantajasta:
( 37 arvostelua ) Melbourne, Australia

Projektin tunnus: #17546311

4 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön

karunakartiwari

Hi there, Greeting for the day, hope you are doing well I have 10+ Years of experience as windows server support engineer I will help in configuration of Hybrid Exchange deployment with office 365 . so far Lisää

$294 AUD 1 päivässä
(165 arvostelua)
6.6
sudhanlogics

hello I am professional system administrator and server engineer. I have experience in setting up mail servers(SMTP ) exchange servers. I can fix the issue. looking forward to discuss with you on chat. best regards Lisää

$264 AUD 2 päivässä
(149 arvostelua)
6.4
amiteshojha

Hi sir hope you are doing good I'm working as mail server expert since 8 years will fix your mail sending issue successfully and fast as fixing these issues on daily basis message me will do it perfectly

$105 AUD 1 päivässä
(55 arvostelua)
5.6
talhamq

I have experience in deploying and maintaining of: - Cloud Computing Platforms: Amazon Web Services (EC2, S3, RDS, VPC, Elastic Beanstalk etc); - Server operating systems: Windows Server 2003 - 2012R2, Amazon Linux Lisää

$105 AUD 0 päivässä
(78 arvostelua)
5.5