This morning, I tried to log in to the two IMAP email accounts I check with Aqua Mail Pro. I repeatedly got an error message saying "Error synchronizing mail, Authentication error: NO Login failed: Authentication failure." On the list of folders, it says "Incoming server login error: NO login failed: authentication failure." I've checked, and I have no trouble logging in to these same accounts using the email programs on my desktop computer (Mulberry and PostBox). I check my email at least once a day with Aqua Mail, and this has never happened before. (I used to have Aqua Mail check for mail every X minutes, but several months ago I decided I would simply check manually rather than on a schedule. That has not been a problem.) I'm using Aqua Mail version 1.5.0.19 and Pro Unlock 1.0.15 on a Nexus 7 tablet running KitKat 4.4.4.
I had a similar problem back in July (July 23, 2014) and posted about it here. In fact, I've just copied much of the above paragraph from the message I sent back in July. I went through a bunch of steps then, but no answer was found to explain the problem. I did a similar check today, with the same lack of results. The only difference is that back in July, I was able to read my email via the built-in email client on my tablet. I haven't used that client since then, and when I tried it today, I got an "Internal Error" message, which I reported. However, I then downloaded and installed the K9 email client, and I had no problem accessing my email on my tablet using K9.
Back in July, after I had accessed my email successfully with the built-in client, AquaMail suddenly started to work again. I was hoping that perhaps after I succeeded in accessing my email with K9, there would be a similar miraculous recovery, but alas, it hasn't happened.
I want to say that I have had no trouble accessing my email with AquaMail every day since then, including yesterday. The problem started this morning. I have no idea why. I do know that at least once, possibly twice in the last week or so, I have been informed of updates to AquaMail and have updated each time. I don't know whether something in the update is the source of the problem, but I can't think of anything else that is different. I have no idea how to go back to an earlier version of AquaMail, or whether that would help.
I'd be most grateful for some help with this problem. Since I've already gone through all the steps suggested back in July, there's no need to ask me to check to see whether the security settings are the same, or other settings are the same. I've already done so again today, without finding anything useful. A full record of my earlier similar problem can be found here:
https://www.aqua-mail.com/forum/index.php?topic=2599.0Thanks in advance for your help.
