Changing a password breaks K-9

Support
1

I use K-9 on two accounts from a mail server in a domain I own hosted by FatCow.

I changed the password on one of those accounts. K-9 can’t connect and returns either

  1. K-9 is unable to parse TLS packet header if I use the same ports used for the other account,
  2. authentication failed, or
    3)Username or password incorrect. (Command:sensitive; response: #2# [NO,[AUTHETICATIONFAILED], Authentication failed.])

The username worked before the password change and wasn’t altered in this process. The password is correct, it works on my desktop client and using Roundcube Webmail.

The account I didn’t change connects as it should, using ports 993 and 465, but I didn’t change that password.

The last time I changed a password, I had to try three or four ports before K-9 connected, and I ended up using port 143.

What are you trying to accomplish?
send and receive email after password change

What have you tried so far?
Verified password, verified ports, compared to a second account on the same server, tried the same ports as used on the second account.

What K-9 Mail version are you using? 6.400

What Android version and device are you using?
Samsung S-21+ Android version 13.

I have the log but it’s large, I can copy and paste it here if it will help.

Old Chief

2

Did you check the setup description by your mail hoster?
https://www.fatcow.com/help/article/email-client-setup

Generic Email Client Settings

These are the generic settings and should work for any email client or mobile device.

Setting What You Input
Username: Your full email address
Password: Your email password
Connection Type: Server & Port info
POP Incoming Server: pop.fatcow.com
Incoming Port: 110 (or 995 with SSL enabled)
IMAP Incoming Server: imap.fatcow.com
Incoming Port: 143 (or 993 with SSL enabled))
SSL (Optional): Enabled or Disabled
Outgoing Server Authentication: Enabled
Outgoing Server: smtp.fatcow.com
Outgoing Port: 587 (or 465 with SSL enabled)
3

Thanks for replying, I appreciate you taking the time, Yes, I tried every variation, then I nuked and recreated both accounts, and on the second try, it worked. I have no idea why, but after 40 years screwing around with computers, I know when I’m beat. :crazy_face:

4

greetings. my father inlaw change his phone and we could not log in back to his account

5

Same mail provider? Please give more information: what K9 version, mail providet, if you can login to tge mail portal of your mail provider, etc

6

I got hit by this problem. After I changed the password once, sending email broke with failed authentication. I then reset the password a second time and now received and sending are both broken (failed authentication). I’m using version 6.400. I’m using OnePlus 6 phone/Android 11.

I have other email accounts on the same phone to the same server and they work fine. I tried deleting and recreating the account in K-9 but hit the same problem. Log is here: k9 email log - Pastebin.com