Basically I would guess you are running into an anti spam feature. Many mail servers will no longer accept email where the From: and the To: are the same email address.

The second issue is most likely your anti virus program deciding it wants to scan your Thunderbird profile at the same time Thunderbird is trying to use it. It is generally an issue that self resolves in a few minutes.

Thank you Matt, but it seems all those tech authorities are limiting the service more and more. I don't enjoy using the computer anymore. What a shame!  :(

Adelaa said

Thank you Matt, but it seems all those tech authorities are limiting the service more and more. I don't enjoy using the computer anymore. What a shame!  :(

I understand where you are coming from. I suggest you look at GMX for free email for private use. Very popular in the US. they ask basically nothing of you and do what they say. mail and calendar according to the standards. It is refreshing really.

Oh Matt how very kind of you to offer an alternative to TB's email! Strange I never saw it in my many searches for an alternative to both, WLM and TB, but perhaps I did see it without knowing what it was LOL!

I thought email programs had a name and didn't imagine that an email program such as Thunderbird or Windows Live Mail or Eudora would have just 3 capital letters for a name. I can see now my silly train of thought since GMX probably stands for a name...

I'll go and search this before I switch back to WLMail, yes, that disappointed I feel about TB's program. How ironic:

TB doesn't have the problems that WLM had, BUT, it's not well planned and completed, and saved only by the kind techie volunteers.

WLM has lots of problems as proven by their filled up complaints, BUT, it's a very well planned and pretty complete program so one can do MANY things easily and conveniently. Also abandoned, as TB, and also saved by kind techie volunteers. However, it isn't enough here or in TB....  :(

Thanks again so much Matt. I'll go and check GMX!  :o) Adela