hard bounce back notification not being received immediately - exim

We have an exim server setup and configured. The email is being sent by godaddy relay server. In Section: ROUTERSTART, we have specified the following:
send_to_smart_host:
driver = manualroute
route_list = !+local_domains #godaddy relay server#
transport = remote_smtp
We have already made the below setting in exim configuration:
return_path_remove = false
When there is a soft bounce (e.g.: mail quota exceeded), we receive an almost instance bounce back notification email on the email address specified in the return path (while sending the email).
However, when there is a hard bounce (e.g.: email or domain does not exist), we don't receive any bounce back notification.
Can someone please let me know if we are missing an exim configuration? Or if anything needs to be done while sending email?
We use PHPMailer to send email.

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Issue With Receiving Keycloak Email to the Clients

I have a fully functional Keycloak setup with verify email and then update password features enabled. I have tested multiple times and the mail sending part is working perfectly. But some clients reporting that they didn't receive the registration mail. This maybe due to their firewall, spam filter and so on, now I want way to check whether the email has sent from my system or not. Logs won't help at all, cannot find anything related to sent mails in logs.

cPanel web mail does not receive or send mails

In my cPanel account few e-mail accounts are working properly, but some of the email account does not receive or send mails.
here are the errors that I got:
when sending from a gmail account to the cPanel mail:
SMTP error from remote mail server after end of data:
550 High probability of spam
When trying to send from the cPanel email account to my gmail account I get the following message:
Could not deliver message, address not found or don't receive messages.
Can anyone help me solve this?
There are many reasons why this error could occur.
Before that I would recommend that you turn on your Email accounts' Authentication (both SPF and DKIM), those are done through:
cPanel -> Authentication (under the Email section) -> Turn Off DKIM and SPF, then turn them back On
About the second issue - I believe that your domain's mail exchanger (a setting in cPanel) is not properly configured.
If you wish to receive emails for a domain in your cPanel account you need to the following:
cPanel -> Mail Exchanger -> Select your domain -> Select Local Mail Exchanger
You should also see if your mailbox is not Suspended or Partially Suspended

Can't recieve incoming mail with Mailgun

I'm trying to set up inbound mail with mailgun. I want to receive email at support#mydomain.com. (changed for privacy)
All Mailgun's DNS checks pass.
I have a route set up. The expression is match_recipient("support#mydomain.com") and the action is forward("me#gmail.com")
When I use the route testing tool it correctly matches my route.
But when I send email in real life to support#mydomain.com, I get a failure notice. The error message is:
Your message cannot be delivered to the following recipients:
Recipient address: support#mydomain.com
Reason: Remote SMTP server has rejected address
Diagnostic code: smtp;550 5.7.1 Relaying denied
Remote system: dns;mxb.mailgun.org (TCP|17.172.80.96|58312|52.5.239.85|25) (ak47 ESMTP ready)
What step am I missing here?
I know this is over a year old, but since I spent 4 hours trying to figure this out, I will share my solution:
My mailgun account wasn't verified. I saw someone suggest this but I figured they just meant that I had to verify the address I was forwarding to. Nope, when I logged it today I saw a banner at the top saying click here to resend your verification email. I did that, it went through a text message verification process, and all immediately started working!

can't send email to google from webmail cpanel

I use my host for webmail. I can send email to yahoo and other webmail, but I can't send to Gmail or google app.
error:
Mail delivery failed: returning message to sender
tinhphaistc#gmail.com
SMTP error from remote mail server after end of data:
host gmail-smtp-in.l.google.com [74.125.129.26]:
550-5.7.1 [103.3.245.71 1] Our system has detected an unusual rate of
550-5.7.1 unsolicited mail originating from your IP address. To protect our
550-5.7.1 users from spam, mail sent from your IP address has been blocked.
550-5.7.1 Please visit http://www.google.com/mail/help/bulk_mail.html to review
550 5.7.1 our Bulk Email Senders Guidelines. hb2si3576957pac.234 - gsmtp
Your server must be on blacklist and Google is rejecting emails from your IP. Simple fix is Change IP :( and make sure your CMS (Joomla, or wordpress usually) is patched and up to date.
according to mail headers it seems that bulk mails had sent from your server due to this your IP has blocked in gmail. If you are sending bulk mails then go through Bulk Senders Guidelines or if you are not sending bulk mails then check if spam mails had sent from your server.

Incoming messages send again by openerp

When someone sends an email message, it can view on openerp inbox but the outgoing email sends again thru the configuration email address I set up.. why is it so?
I'm using Openerp v7.0.. I used the Outgoing Mail Server in the Settings > Technical > Email > Outgoing Mail Servers.
When someone sends an email and openerp retrieved it, it sends again and again an email but by using the email address I configure.
Your question is not quite clear[1], but this sounds like the default and correct behavior. When an OpenERP user receives an external email message, they will by default receive a copy of the email at their own email address (configured in their user preferences).
Let's say someone replies to a CRM Lead assigned to me (by sending an email to info#mycompany.com, which is imported via the fetchmail module into my OpenERP server): I want to receive a copy of this message in my real inbox at myname#mycompany.com).
In OpenERP 7.0 this behavior can be controlled in the "Email Preferences" of the user profiles: you can choose to receive email notification about new comments and new external emails, or about new external emails only, or no notification whatsoever.
[1]: The following information would help: the version of OpenERP you're using, how the emails are being fed to OpenERP (fetchmail module, mail gateway script, something else...), what email addresses are being fed to OpenERP, what email is configured on the user profiles, etc.