I used GMX together with the good old Eudora for sending out mails for years without much trouble. For three days, however, sending out mails doesn't work, the SMTP server sends this message back: 550.5.7.0 Need to authenticate via POP3 first {mp029}

Receiving mail via GMX however works.

What's to be done in ORDER to send out mails again via GMX? Thanks for letting me know your knowledge.Mine works. But if it were to fail it would not be fault of GMX. I went through this before. Let me explain.

Some ISP companies will block all SMTP except for their service. They will tell you it is for everybody's good. Yet they offer no proof that the block was needed.

You can do at least three things.
1) Just resign yourself to use only what they provide.
2) Calling the support and get the details of how to fix this.
3) GO to a service that has more respect for its customer.

Personally, I think this is abusive competition and should be punished. But I don't have the nerve to start a class action suit.
I don't think the WORST such as it's being blocked...
I suggest revisiting your POP 3 and SMTP settings...From what I've seen in other forums, many GMX users have the same trouble. No solution seems to be around.

These users unisono complain about the non-existing customer service of GMX. And: Calling GMX is not a wise idea - they charge like *censored* for their "answers" that make the problem even worse.

If I want to post in http://forum.gmx.com/forum/forums/show/2.page, there is no "new topic" button coming up. GMX is not REPLYING when I report them this faulty behavior... It's a merry-go-round! Could anybody here please tell me at least how to post in the above mentioned forum? Thanks in advance.Personally with all the other Free choices available i'd dump them like a hot potatoe...Quote from: patio on May 31, 2013, 08:33:04 AM

Personally with all the other Free choices available i'd dump them like a hot potatoe...

Sorry to say, but I'm not interested to know what you would do.