Mac Mail

[sidness]

I use a MacBook Pro 13" processor 2.5 GHz intel core i5
Sierra 10.12.5

My mac mail keeps sending me Mail Delivery System warnings that mail has been undelivered. These are emails I have been using for years. All of a sudden I get several a day sometimes about an email I sent a week ago and it is random to which email it decides to comment on. Since this is my business email and these are usually invoices going out, it is frustrating as to not knowing it the email really delivered or not.
Also if I resent it many times over, sometimes it goes through.

Any ideas on this?

 

[Cory Cooper]

Hello,

Not sure why this issue would just have started. It sounds like an issue with your ISP/host for your email/domain. I would contact the hosting company and have them look into it on their side to see if something has changed.

-Do you have a Time Machine or other backup?
-Is this account setup as IMAP or POP?
-Do you have access to webmail for that account?

If you have a current Time Machine or other backup, we may be able to troubleshoot in other ways if they say everything is good to go on their end.

C