Problems with paragraph characters in SASL passwords?

Patrick Boutilier boutilpj at
Sat May 27 09:30:09 EDT 2017

On 05/27/2017 09:43 AM, Binarus wrote:
> Dear all,
> I am very happy with Cyrus imapd since many years. I am using it to host
> all IMAP mail boxes of my company. I am using SASL and its tools (mainly
> saslpasswd2) for password management. The primary IMAP client in the
> company is Thunderbird.
> Recently, I have decided to replace all IMAP passwords by longer ones.
> While this worked in the vast majority of cases, there were several
> mailboxes where Cyrus / SASL refused the connection with the new
> password. I have lost several hours of debugging this until the
> following turned out:
> As soon as the password contained a paragraph character ("§"), Cyrus /
> SASL refused the connection due to a wrong password even if the password
> was entered correctly into Thunderbird's password dialog. This happened
> with Thunderbird 52.1.1 and Cyrus imapd 2.4.16 (as shipped with Debian
> wheezy).
> My question is: Is there a known problem with paragraph characters in
> SASL / Cyrus passwords, or does Thunderbird cause that problem (for
> certain reasons, I haven't been able to test other clients yet, and
> googling for some hours also did not lead to anything)?

Works for me from a telnet to port 143 then issuing:

. login <user> <password>

replacing user and password with correct values.

But it does fail in Thunderbird.

> Thank you very much in advance,
> Binarus
> ----
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