Request Header Fields Too Large

[hguilbert]

This is more support ...

Snappymail returns this error "Request Header Fields Too Large" with a user account with the multi-account function via the command at the top right (Add Account).

What could be the cause??

Thanks

OS Debian Bullseye
MAP daemon : dovecot
PHP version : php-fpm 7.4
Browser : Firefox 135
SnappyMail Version : 2.38.2

[the-djmaze]

This is an HTTP 431 error.
Please check your apache/nginx logs why this happens.

[hguilbert]

Thanks for your reply
Can this help you??

GET / HTTP/2.0" 431 360 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/2.0" 431 330 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/2.0" 431 360 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /favicon.ico HTTP/2.0" 431 307 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/2.0" 431 330 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/2.0" 431 333 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /favicon.ico HTTP/2.0" 431 307 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/2.0" 431 360 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /favicon.ico HTTP/2.0" 431 307 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /favicon.ico HTTP/2.0" 431 307 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

[hguilbert]

Additionally, after Apache switched from HTTP/2 to HTTP/1.1, a new "Bad Request" error appeared

GET / HTTP/1.1" 400 711 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /favicon.ico HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/1.1" 400 6897 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/1.1" 400 6897 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET / HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0
GET /snappymail/v/2.38.2/static/js/serviceworker.js HTTP/1.1" 400 1436 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0