Re: weird problem with one mail account in Thunderbird....ISP or what ?
Hello Frank,
I'dont thing you should be too worried about the security of your
system. I had a similar problem with my own mail server - I'm running
Dovecot on Debian Wheezy.
At first, I was very suspicious why Thunderbird didn't accept my
password any more but there is a simple explanation: The maximum number
of IMAP connections per user and IP was succeeded.
It's a bit confusing Thunderbird isn't showing an appropriate message
for that case (I didn't look into the IMAP protocol if Thunderbird could
distinguish the failure from a bad password at all). However, my mail
server logs are clear:
> Maximum number of connections from user+IP exceeded
(mail_max_userip_connections=15)
After raising the the maximum number of connections and restarting
Dovecot, the error was gone immediately .
Thunderbird seems to open many simultaneous IMAP connections if you have
a lot of folders in your account. I'm also using push mail on my android
smartphone, which requires one IMAP connection per folder. If you have
no influence on your mail provider you can limit the number of
simultaneous connections in the mail account settings of Thunderbird.
Regards,
Janis
Am 28.05.2015 um 03:06 schrieb Frank:
> This is long so I hope all can read till the end.....
>
> I access all my mail through Thunderbird using IMAP. It has always been
> flawless until yesterday.
> When I went into Thunderbird at mid-day one of my accounts with my
> ISP Videotron.ca registered a logon failure..despite the fact nothing
> had changed.
>
> They keep changing my password through their facilities...and
> when I run Thunderbird with the new password it connects fine.
> But if I close Thunderbird and go back in, the old "cannot logon to
> IMAP" is back.
>
> Three separate calls to support at Videotron resulted in them
> eventually claiming (on the third call) that my system had been
> compromised. I told them that was unlikely as I am not running
> Windows. He then spoke with their "security" department who said
> it was possible the system had been compromised...that Linux and
> Mac are subject to root-kits and "other" viruses.
>
> I have checked (with chkrootkit) and as far as it is concerned,
> there is nothing wrong.
>
> The strange thing is this: I have 3 separate mail accounts with
> Videotron...but only the main one (which is under my name) is
> giving this trouble. This one which I use for this list is fine
> as is a second less important account.
>
>
> It seems I can't convince them the problem is at their end....or
> perhaps something else is going on here ?
>
>
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