Years ago I joined some local Freecycle groups which at the time used the Yahoo Group system. A year or more ago, the local groups had to switch to using the official Freecycle network. Since about that time, messages I try to send to originators of a post never seem to reach the poster, even if I was the poster of that "ad", sending a test message to myself!
I am running a laptop with Windows 7 using either IE 11 or Firefox 38.3.0. My mail is with Yahoo through AT&T. I only access new Freecycle posts by going to the freecycle site, selecting a specific local group, and reading the posts ('ads') there. When responding, I usually center-click to open an interesting ad in a new tab, then click on the "Reply" button to get a response box which I type in, and then hit the "Send" button, after which a new message shows up saying my message was successfully sent. I get the same result, and have the same problem, whether using IE or Firefox to access Freecycle from.
When I post ads, I do (at least sometimes) get responses from other members, these coming as Emails from the Freecycle system which forwards them "anonymously". My responses to those Emails seem to get through, or at least did some of the time in the last year.
My Yahoo mail system has a main address, a secondary address and various "pseudo-addresses" = "disposable" addresses, all of which can be filtered on incoming mail and sent to specific mail folders. For many years I have been using a few pseudo-addresses at different websites and for various purposes, all with no previous problems. I had been using one address here for years, but switched after the FC provider change; changing back, which I tried, doesn't improve the situation.
Some while ago, I contacted Freecycle about this problem but was told that my messages are all going through their system. A local Freecycle moderator suggested my using a Yahoo System checking tool, which I was not impressed with and which found nothing wrong. AT&T tech people have no suggestions, and nobody from Yahoo can be contacted directly; Yahoo has neither a phone number or an Email address, and I doubt I could get through the front door of its headquarters building ether.
Does anyone have any ideas about this problem, where to go and/or what to look for to determine where/why it is occurring?