Package: claws-mail Version: 3.17.5-2 Issue: Unable to connect to Yahoo IMAP server The error message is: Error. Connection to imap.mail.yahoo.com failed: login refused. The account with the same settings is working as expected in Thunderbird. Settings: imap.mail.yahoo.com Port 993 Authentificatiom method: Authomatic Network log: --- * Account 'xxxxxxxx IMAP': Connecting to IMAP server: imap.mail.yahoo.com:993... [2020-05-20 23:41:23] IMAP< * OK [CAPABILITY IMAP4rev1 SASL-IR AUTH=PLAIN AUTH=XOAUTH2 AUTH=OAUTHBEARER ID MOVE NAMESPACE XYMHIGHESTMODSEQ UIDPLUS LITERAL+ CHILDREN X-MSG-EXT OBJECTID] IMAP4rev1 Hello * IMAP connection is un-authenticated [2020-05-20 23:41:24] IMAP> 1 CAPABILITY [2020-05-20 23:41:24] IMAP< * CAPABILITY IMAP4rev1 SASL-IR AUTH=PLAIN AUTH=XOAUTH2 AUTH=OAUTHBEARER ID MOVE NAMESPACE XYMHIGHESTMODSEQ UIDPLUS LITERAL+ CHILDREN X-MSG-EXT OBJECTID [2020-05-20 23:41:24] IMAP< 1 OK CAPABILITY completed [2020-05-20 23:41:24] IMAP> Logging xxxxx...@yahoo.com to imap.mail.yahoo.com using PLAIN [2020-05-20 23:41:28] IMAP< AUTHENTICATE Invalid credentials ** IMAP error on imap.mail.yahoo.com: LOGIN error [2020-05-20 23:41:28] IMAP< Error logging in to imap.mail.yahoo.com [2020-05-20 23:41:28] IMAP> Logging xxxxx...@yahoo.com to imap.mail.yahoo.com using plaintext [2020-05-20 23:41:32] IMAP< LOGIN Invalid credentials ** IMAP error on imap.mail.yahoo.com: LOGIN error --- -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing'), (500, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages claws-mail depends on: ii libc6 � 2.30-8 ii libcairo2 � 1.16.0-4 ii libcompfaceg1 1:1.5.2-5+b2 ii libenchant-2-2 2.2.8-1 ii libetpan20 1.9.4-2 ii libgdk-pixbuf2.0-0 2.40.0+dfsg-4 ii libglib2.0-0 2.64.2-1 ii libgnutls30 3.6.13-2 ii libgtk2.0-0 2.24.32-4 ii libice6 � 2:1.0.9-2 ii libldap-2.4-2 2.4.50+dfsg-1 ii libnettle7 3.5.1+really3.5.1-2 ii libpango-1.0-0 1.44.7-4 ii libpangocairo-1.0-0 1.44.7-4 ii librsvg2-2 2.48.4+dfsg-1 ii libsm6 2:1.2.3-1 ii xdg-utils � 1.1.3-2 Versions of packages claws-mail recommends: ii aspell-en [aspell-dictionary] 2018.04.16-0-1 ii aspell-eu [aspell-dictionary] 0.5.20151110-5 ii aspell-pl [aspell-dictionary] 20150428-3 ii aspell-ru [aspell-dictionary] 0.99g5-23 ii aspell-uk [aspell-dictionary] 1.7.1-2 ii claws-mail-i18n � 3.17.5-2 ii xfonts-100dpi � 1:1.0.4+nmu1 ii xfonts-75dpi 1:1.0.4+nmu1 Versions of packages claws-mail suggests: pn claws-mail-doc <none> pn claws-mail-tools <none> ii firefox-esr [www-browser] 68.8.0esr-1 ii gedit � 3.36.2-1