This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Unable to log in at server. Probably wrong configuration, username or password. (1&1 IMAP)

sebastian.guckes
sebastian.guckes
more options

Hi, I have an existing installation of Thunderbird 91.9.1 on my linux system. I have a gmail, outlook and web.de mail each running via this installation (IMAP). My new workmail is hosted by 1&1(ionos). I can log in via web interface. Autoconfig finds the configuration that is (according to their help articles) the correct one to access the Mail via IMAP. Incoming: imap.1und1.de SSL/TLS 993 Outgoing: smtp.1und1.de STARTTLS 587 normal Password Username is my full email address. There have been no typos. I checked 5x, copy pasted, rechecked. Pasted it into the web interface login, and thunderbird before clicking go on each -> tb - no, web - yes domain is talsen.team

I would appreciate some pointers to get this fixed. And yes i did read prior questions regarding this error. It did not help in my case.

Hi, I have an existing installation of Thunderbird 91.9.1 on my linux system. I have a gmail, outlook and web.de mail each running via this installation (IMAP). My new workmail is hosted by 1&1(ionos). I can log in via web interface. Autoconfig finds the configuration that is (according to their help articles) the correct one to access the Mail via IMAP. Incoming: imap.1und1.de SSL/TLS 993 Outgoing: smtp.1und1.de STARTTLS 587 normal Password Username is my full email address. There have been no typos. I checked 5x, copy pasted, rechecked. Pasted it into the web interface login, and thunderbird before clicking go on each -> tb - no, web - yes domain is talsen.team I would appreciate some pointers to get this fixed. And yes i did read prior questions regarding this error. It did not help in my case.

Gekose oplossing

Ok I found the problem... Basically the mail was too new. I was already using the ionos webmail interface, but from the outside it was "not created" yet. In my Webmail interface i received an email along the lines of "Thank you for choosing ionos..." "We have created a basic mail..." "to use your new mail pleas log into webmail using the following link" -> did it, URL was slightly different(mail.ionos.de instead of email.ionos.de) after logging in once more i returned to the usual webinterface but now i was able to connect thunderbird via imap.

TLDR: Wait for a confirmation Mail from ionos asking you to activate your "Mail Basic Account". Afterwards you can connect via IMAP

Lees dié antwoord in konteks 👍 0

All Replies (1)

sebastian.guckes
sebastian.guckes Vraag-eienaar
more options

Gekose oplossing

Ok I found the problem... Basically the mail was too new. I was already using the ionos webmail interface, but from the outside it was "not created" yet. In my Webmail interface i received an email along the lines of "Thank you for choosing ionos..." "We have created a basic mail..." "to use your new mail pleas log into webmail using the following link" -> did it, URL was slightly different(mail.ionos.de instead of email.ionos.de) after logging in once more i returned to the usual webinterface but now i was able to connect thunderbird via imap.

TLDR: Wait for a confirmation Mail from ionos asking you to activate your "Mail Basic Account". Afterwards you can connect via IMAP