A: If your order emails have stopped - this is most likely due to the fact your email server or server-side anti-spam (eg. Spamcop, Barracuda, Panda) have blocked or denied emails from our server. Once this happens, you need to be sure your email team have the below info white-listed, and contact Webninja support so we can remove you from our "undeliverable" list.
To ensure you have the best chance of receiving these emails, please have your email team and your customers "white-list" our email provider's (Sendgrid) IP address: 22.214.171.124
You can also use the following domains for whitelist: mail.shopau4.info and mail.shopau8.info
There's a second scenario where the emails are received by the recipient mail server ok, but the end user (most likely your admin staff or you may have created an email such as "email@example.com" or similar) never receives the emails.
You can have Webninja investigate in cases like this, and we may find that the recipient mail server returns a response of: "250. OK" - this indicates the email was successfully delivered to the recipient mail server - however we may find a second message "queued for delivery"
This is a recipient response message from your mail server.
There are numerous causes and reasons for it and it can be quite confusing. You'll need to follow-up with your IT team (or if you have a separate email team that manage your company emails) and have them investigate the reason for the undelivered emails when they go to that queued status.
Here are some articles to help understand the cause a bit more:
This is our mail provider:
this is one of their competitors https://mandrill.zendesk.com/hc/en-us/articles/205582717-Why-does-a-delivered-message-say-queued-
Here's an article from a very widely used online spam filter, Barracuda:
Here's an important excerpt from the bottom of that page:
"If the Delivery Status is Delivered, and the Delivery Detail shows a 250 SMTP response code, the destination mail server has signaled a successful message transfer..."
" If the recipient does not receive the message in their mailbox, the mail server or other entity either blocked or redirected the message..."
" If your mail server is doing some additional level of filtering, this might be why certain messages are not delivered to your users...."