As for several other people, I did not receive many emails sent on Sunday 27/4/20 including order acknowledgments and emails from friends outside talktalk platform. At least some of the senders were not receiving bounce back messages.
This morning I tried some tests.
8:16 am ..sent test message from outside platform to my firstname.lastname@example.org address.
Result: no bounce back message and still not received by 10:06am 😞
8.18 am ..sent message FROM my email@example.com address to outside platform
Result..message received by outside platform straight away 🙂
9:41 am...sent test message from outside platform to my firstname.lastname@example.org address.
Result : message received at 9:50am .. almost 10 minutes later.
10:17 am sent test message from outside platform to my email@example.com address.
Result : no bounce message at sender and still not received at 10:29am... 17minutes later.
One external sender sent an email at 7.24am on Sunday 26/4/20 and it arrived at 9:36am this morning 27/4/20.
Some emails are getting through today but some are clearly not. I have not received all the emails sent on Sunday.
At 10:34am 27/4/20, the email is still not working properly and I am concerned about emails being lost from yesterday.
I too have exactly the same problem. Confirmation of online purchases not coming through. Talktalk test mail not working. Emails to own address working but slow. I have just received one reminder for meter reading and one from a USA website. No pattern at all!
I am experience the same problem. I am missing many external order confirmation emails which I know were sent yesterday but have received 2 messages sent this morning. I have carried out the same checks with similar results.
Yes thanks, I'm beginning to get some emails that were sent on Sunday 🙂
From your earlier response, "if senders do not have mail accepted for delivery then they'll retry and ultimately time out and the user will get a retry fail message."....
I guess that different sender platforms differ on how often and how many times they will retry and that will affect when the email will eventually arrive or whether it is bounced.