Verification email not received by domains using Office365 email client - email

When someone signs up they receive an email with a link they need to click to verify their email. The email comes from no_reply#domain.com
So far all clients receive this email with the exception of clients using their own domain with Office365. With these clients it's not an issue of emails going to spam - they don't receive anything at all in either their spam or their inbox.
The email is sent from a domain that uses Google Business for email.
Any ideas how to solve this issue?
I should add that if the email is forwarded manually, it does come through, just not when automatically sent.

Related

(Google Workspace) Email not being received from one sender only

I have a Google Workspace (I think that is what it is called) that I use to manage a private email address for a small business.
Everything has been working fine, and I can see the user (richard) in the admin area with associated email set up. I have sent test emails to and from their email account to make sure it is working okay and everything seems to be working fine.
I have two email addresses associated with the domain, for example:
emma#domain.co.uk (me) and
richard#domain.co.uk (richard)
I use the first email address as an admin account, and they use the second one.
They've had this email account for a long time, and have had no problems, however recently they have stopped receiving emails from one sender (their accountant).
I can still send emails to the account from my own personal email address to them, and they are receiving emails from other businesses, but just this one person is sending emails to them and they aren't being received.
Things I've tried:
Checked the spam/junk folders and no emails are there
Checked to make sure the sender isn't on the blocked list
Looked at the email logs as per this suggested article and don't see any record of the incoming email that has been sent
Sent a test email to account#accountant.co.uk and richard#domain.co.uk from emma#domain.co.uk and they both receive my email. When the accountant presses "reply all" the email only gets received by emma#domain.co.uk and never arrives at richard#domain.co.uk
Sent a test email from richard#domain.co.uk to account#accountant.co.uk and she receives the email. When she replies, he doesn't get the reply.
All I can think of is she has somehow blocked him via her email client, but I need to check out all the possibilities of it being a problem at our end as she's not great with email and not sure how I'm going to navigate that one :)
Any suggestions welcome!

Configuring POP3 with Sendgrid - Can't receive emails but can send them

All I have is an email client (emClient) and a working sendgrid account. When prompted to enter an email address, I can happily put anything#mydomain.com and it will confirm that it works with SMTP. I can also send emails using this client. I authenticate with the username apikey and my api key.
However, these emails are permanently stuck in the "outbox" and are constantly sent over and over again, presumably because the client has no confirmation that they were sent. When trying to set up a new account under this domain, I setup my "incoming server" as smtp.sendgrid.net and provide my credentials and it sort-of works (after prompting me for my authentication?).
As you can see, SMTP authenticates just fine and this makes sense as I am seemingly able to send email. However, both IMAP and POP3 when I select them in the "incoming server" are stuck on this "testing" stage until they fail.
Now, if we skip ahead to me sending something out - basically, it works. I receive the email on the destination, it does not get marked as spam and it comes from my domain and my name.
However, when I attempt to receive an email on the anything#mydomain.com one, it just doesn't do anything. I don't get an error from gmail that it wasn't delivered, it simply just doesn't get delivered.
For my domain settings, I have the following configured:
Twilio SendGrid developer evangelist here.
While SendGrid allows you to send emails over SMTP or via the API, SendGrid is not a full mailbox that you can connect to over POP3 or IMAP. You cannot connect to SendGrid using an email client, that is not what it is intended for. SendGrid is not a mailbox, but a way to programmatically send and receive emails and other email based events.
The way to receive incoming emails is via the inbound parse webhook. When you have set that up, incoming emails to your configured domain will cause a webhook, an HTTP request, to be sent to a URL you configured, with all the information about the email.

Emails sent through my email address are received to client's spam folder

I am sending emails through my domain and it receives to spam folder of clients. Even I heard that email sent to gmail account are also received to spam folder.
I check with my hosting provider for all necessary configuration related to email sending are configured correctly. I am using dedicated IP, separate cpanel account, PTR and DMARC are set properly and enabled valid DKIM and SPF records for my domain.
I also tested the spaminess of the domain using a third-party online tool and the results were 10/10 which means they are fully authenticated.
Another thing I double check the content of the messages with spam tables. The content of the email should not look like SPAM.
Please help me with this issue.
Best regards,
Vijay

Sendgrid - Activity says email delivered but email not received

I tried to send an email through sendgrid. I have a custom domain myself#contoso.com. If i try to send an email to user1#gmail.com with the from address as myself#contoso.com,then,the email is delivered to gmail with "via". When i try sending email to myself#contoso.com with the from address being myself#contoso.com the activity says the email is delivered however, in outlook client i have not received the email. What is it that I can try or do?
I have tried whitelisting contoso.com but it did not work
This is not an answer, as it doesn't help work out why the emails that are "Delivered" have not been received, but this is SendGrid's note on why Email messages with the “Delivered” status are not received:
Twilio SendGrid posts the Delivered event after the destination server accepts the message with a 250 OK response. Once an email is accepted by the destination server, we are unable to see what happens to the message. The receiving server could send it to the inbox, queue it for later delivery, put it into the spam folder, etc.
Often times, a recipient domain will initially accept a message for delivery, and then apply additional filtering afterwards. In this situation, we would have posted the Delivered event, but not have any insight into the additional filtering. Any additional Twilio SendGrid events for your email message would be triggered by recipient engagement (i.e. open/click events, unsubscribes, etc.).
Also note that at the time of writing, that answer had 26 downvotes (and zero upvotes) on the SendGrid website, probably indicating that many other users have experienced this problem.
I had several issue solving this problem. The most important part is to set "Sender Authentication" from sendgrid to your domain dns. There is a instruction here. I'm using godaddy, so the link to set dns is https://dcc.godaddy.com/manage//dns .

Correctly unblocking LSMSGCV filtered email?

Part of our product involves sending users a weekly email with a status report about their account, and once in a while we get the following reply from their spam filtering service saying the following:
LSMSGCV: You just sent an email to foo#bar.com - please reply
Did you send an email to: foo#bar.com from: foo2#bar.com?
If yes, it got caught as unsolicited email by our spam blocker. You can release the mail from spam quarantine by simply replying to this message. At the same time the spam blocker will recognize you as a trusted sender (from this email address) and automatically add you to my Allow list for this and any future communication.
Many illegal spammers forge email addresses to try to get past spam blocking software. These spammers send hundreds of millions of spam messages a day, clogging email servers and wasting people’s time. We regret that these spammers have forced us to send this message to you.
Original From: foo2#bar.com
Original To: foo#bar.com
LSMSGCV For more information about our spam blocking software please visit www.lightspeedsystems.com
The problem is that our from email address is not a real inbox, it's actually a google group (set up through google apps) that we use to make sure everybody who needs to can receive the reply to this email and answer from their personal company accounts.
For LSMSGCV, does it matter if the "unblocking" reply comes NOT from the original from address? Would that successfully whitelist our from address or would that be insufficient?