I exploit OS X Mail program on a mid 2015 MacBook professional working Large Sur. Earlier than that I had a late 2013 Retina mannequin working Catalina. Each of those machines have/had this drawback and with some earlier OS’s.

After I’m at residence all the pieces works advantageous. If I am some other place, and so they have the identical supplier as I do (Spectrum), all the pieces is ok. If I am someplace that has a distinct supplier, I can nonetheless obtain mail as traditional, nevertheless it refuses to ship and stashes the mail within the outbox. After I open Mail the subsequent time I am at residence, all of it goes. To ship mail utilizing every other supplier, I’ve to make use of a browser and log in as me to Spectrum’s web site. That is a ache.

I even have a 2009 Macbook Professional working El Capitan that I used to be given just lately. The setup for the Mail program is noticeably totally different from newer os’s, and it doesn’t have the issue. Ship and obtain each work wherever I’m. I might use it for my on-the-road mail machine, nevertheless it has different issues.

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