0 votes


I'm having trouble getting mail flow to work from Adaxes through Office 365 to external addresses (internal email works fine). I'd like to try signing the outgoing email with a cert to try and get O365 to trust the email for relay externally. I've verified a connector in Exchange Online that should be trusting mail from my public IP, but I'm still getting the Relay Access Denied error. Is there a way to access additional SMTP settings like TLS, Certificates, DKIM, etc... for the built-in mail feature in Adaxes?


by (920 points)

1 Answer

0 votes
by (215k points)
selected by
Best answer

Hello Ryan,

Unfortunately, there are no additional SMTP settings except those available in Mail Settings because Adaxes does not send emails itself. It just connects to a mail server and passes the messages to the server for delivery.
For troubleshooting purposes, please, provide the following details:
Does the error appear only in Adaxes and does not appear when emails are sent to external addresses via other mail clients?
Was the error appearing from the very beginning or occurred recently?


Thanks for the reply! I'm fairly certain it's not an Adaxes problem, and more of an O365 security problem with our tenant. I was just looking to see if there were advanced settings somewhere to try tweaking. I'll keep playing around with it, maybe try setting up an internal SMTP relay rather than direct to O365. Thanks again!

Related questions

0 votes
0 answers

ADAXES version is 3.13.18106.0 trying to set up "outgoing email server" for email notification. We are using google smtp-relay which require "SSL" After setting it ... their own credentials, such as the internet information server, are not affected by this."

asked May 20, 2021 by justinh (60 points)
0 votes
1 answer

Hello, How do I configure Adaxes to use SendHub to send SMS?

asked Mar 4, 2021 by johnphillips8504 (50 points)
0 votes
1 answer

We have business rules active for creating (Office365)accounts. When a new account is created and activated for Office365 the mailbox is not available straight away ... how others are handeling the creation for Office365 accounts without on-premise Exchange.

asked Sep 25, 2017 by Maarten (100 points)
0 votes
0 answers

Hi, I am finding the SMS Settings options a little limited. We use a bispoke SMS web service gateway to integrate with our SMS provider and I have managed to use ... rather than in the query string or alternatively, to launch an external script or executable?

asked Feb 23, 2016 by sam.webster (320 points)
0 votes
1 answer

hi- how do I merge 2 ldap filter? Basically #1 just shows the Users OU within those NY/LA/DC OUs and #2 list other OUs. I have to update a console and ... =organizationalUnit)(|(name=Offsite*)(name=Service Accounts)(name=Pubco_Users)(name=PWD Reset OU)))

asked May 22, 2014 by MeliOnTheJob (1.7k points)
2,880 questions
2,600 answers
114,555 users