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webmail.web4u.cz Open in urlscan Pro
81.91.86.29  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: https://www.posta.krumlov.cz/
Effective URL: https://webmail.web4u.cz/
Submission: On September 22 via automatic, source certstream-suspicious — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 2 IPs in 1 countries across 2 domains to perform 15 HTTP transactions. The main IP is 81.91.86.29, located in Czech Republic and belongs to WEB4U, CZ. The main domain is webmail.web4u.cz.
TLS certificate: Issued by R3 on September 17th 2021. Valid for: 3 months.
This is the only time webmail.web4u.cz was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 81.91.86.10 39790 (WEB4U)
2 16 81.91.86.29 39790 (WEB4U)
15 2
Apex Domain
Subdomains		 Transfer
16 web4u.cz
webmail.web4u.cz
327 KB
1 krumlov.cz
www.posta.krumlov.cz
383 B
15 2
Domain Requested by
16 webmail.web4u.cz 2 redirects webmail.web4u.cz
1 www.posta.krumlov.cz
15 2

This site contains no links.

Subject Issuer Validity Valid
posta.krumlov.cz
R3		 2021-09-22 -
2021-12-21		 3 months crt.sh
webmail.web4u.cz
R3		 2021-09-17 -
2021-12-16		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://webmail.web4u.cz/
Frame ID: 4BB40A04015F7136B6BB7EF8DAB55182
Requests: 15 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Webmail :: Vítejte v Webmail

Page URL History Show full URLs

  1. https://www.posta.krumlov.cz/ Page URL
  2. http://webmail.web4u.cz/horde/imp/login.php HTTP 301
    https://webmail.web4u.cz/horde/imp/login.php HTTP 301
    https://webmail.web4u.cz/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]*?bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.css
  • bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.js
Overall confidence: 100%
Detected patterns
  • jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?
Overall confidence: 100%
Detected patterns
  • jquery-ui.*\.js

Page Statistics

15
Requests

100 %
HTTPS

0 %
IPv6

2
Domains

2
Subdomains

2
IPs

1
Countries

327 kB
Transfer

1038 kB
Size

1
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. https://www.posta.krumlov.cz/ Page URL
  2. http://webmail.web4u.cz/horde/imp/login.php HTTP 301
    https://webmail.web4u.cz/horde/imp/login.php HTTP 301
    https://webmail.web4u.cz/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

15 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
/
www.posta.krumlov.cz/ 		309 B
383 B 		Document
General
Check archive.org
Download Go to
Full URL
https://www.posta.krumlov.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.10 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
php4.web4u.cz
Software
openresty /
Resource Hash
be42efa6fa80b2bd5689b6c09b5a81637ebfee58b84e225b061658d856ff613e

Request headers

:method
GET
:authority
www.posta.krumlov.cz
:scheme
https
:path
/
pragma
no-cache
cache-control
no-cache
upgrade-insecure-requests
1
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
accept-language
de-DE,de;q=0.9
accept
text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
sec-fetch-site
none
sec-fetch-mode
navigate
sec-fetch-user
?1
sec-fetch-dest
document
accept-encoding
gzip, deflate, br
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
Accept-Language
de-DE,de;q=0.9

Response headers

server
openresty
date
Wed, 22 Sep 2021 02:34:42 GMT
content-type
text/html
last-modified
Sat, 10 Feb 2007 14:35:07 GMT
etag
W/"18c2943-135-429202ec1fcc0"
x-w4u-upstream
data27_php4
content-encoding
gzip
Primary Request /
webmail.web4u.cz/
Redirect Chain
  • http://webmail.web4u.cz/horde/imp/login.php
  • https://webmail.web4u.cz/horde/imp/login.php
  • https://webmail.web4u.cz/
5 KB
3 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty / PHP/5.6.40-0+deb8u12
Resource Hash
da97a01a52c6756295dfaa60e105be867cd476abc10baf4994e087f5bd3146af
Security Headers
Name Value
X-Frame-Options sameorigin

Request headers

:method
GET
:authority
webmail.web4u.cz
:scheme
https
:path
/
pragma
no-cache
cache-control
no-cache
upgrade-insecure-requests
1
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
accept-language
de-DE,de;q=0.9
accept
text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
sec-fetch-site
cross-site
sec-fetch-mode
navigate
sec-fetch-dest
document
accept-encoding
gzip, deflate, br
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
Accept-Language
de-DE,de;q=0.9
Referer
https://www.posta.krumlov.cz/

Response headers

server
openresty
date
Wed, 22 Sep 2021 02:34:42 GMT
content-type
text/html; charset=UTF-8
x-powered-by
PHP/5.6.40-0+deb8u12
set-cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181; path=/; secure; HttpOnly
expires
Wed, 22 Sep 2021 02:34:42 GMT
cache-control
private, no-cache, no-store, must-revalidate, post-check=0, pre-check=0
pragma
no-cache
last-modified
Wed, 22 Sep 2021 02:34:42 GMT
x-frame-options
sameorigin
content-language
cs
vary
Accept-Encoding
content-encoding
gzip

Redirect headers

server
openresty
date
Wed, 22 Sep 2021 02:34:42 GMT
content-type
text/html; charset=iso-8859-1
content-length
315
location
https://webmail.web4u.cz
bootstrap.min.css
webmail.web4u.cz/skins/elastic/deps/ 		152 KB
23 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/skins/elastic/deps/bootstrap.min.css?s=1597086310
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
f9ddd1e64827cb0fa09d74aa581ecfd468212261fa170ec9baddbd678389b342

Request headers

:path
/skins/elastic/deps/bootstrap.min.css?s=1597086310
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
text/css,*/*;q=0.1
cache-control
no-cache
sec-fetch-dest
style
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:05:10 GMT
server
openresty
etag
"26041-5ac8aa22ee580-gzip"
vary
Accept-Encoding
content-type
text/css
accept-ranges
bytes
content-length
23198
styles.css
webmail.web4u.cz/skins/elastic/styles/ 		101 KB
19 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/skins/elastic/styles/styles.css?s=1597086298
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
7be8adede2f06532bc60694f1a065b6db1d1447951451229cedb9921856025bb

Request headers

:path
/skins/elastic/styles/styles.css?s=1597086298
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
text/css,*/*;q=0.1
cache-control
no-cache
sec-fetch-dest
style
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:04:58 GMT
server
openresty
etag
"194ab-5ac8aa177ca80-gzip"
vary
Accept-Encoding
content-type
text/css
accept-ranges
bytes
content-length
19629
jquery-ui.css
webmail.web4u.cz/plugins/jqueryui/themes/elastic/ 		33 KB
8 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/plugins/jqueryui/themes/elastic/jquery-ui.css?s=1597086297
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
06bd23ab85e71dcb4aabe629932bb6438fe0819cfd037fd5f53168af71db0c35

Request headers

:path
/plugins/jqueryui/themes/elastic/jquery-ui.css?s=1597086297
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
text/css,*/*;q=0.1
cache-control
no-cache
sec-fetch-dest
style
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:04:57 GMT
server
openresty
etag
"858e-5ac8aa1688840-gzip"
vary
Accept-Encoding
content-type
text/css
accept-ranges
bytes
content-length
8157
jquery.min.js
webmail.web4u.cz/program/js/ 		87 KB
31 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/program/js/jquery.min.js?s=1597086305
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
542ac2738d21d5ea4a39cd05efc447c3b5ca553f212f1bff44215d3f5f007a6f

Request headers

:path
/program/js/jquery.min.js?s=1597086305
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
*/*
cache-control
no-cache
sec-fetch-dest
script
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:05:05 GMT
server
openresty
etag
"15dfb-5ac8aa1e29a40-gzip"
vary
Accept-Encoding
content-type
application/javascript
accept-ranges
bytes
content-length
31474
common.min.js
webmail.web4u.cz/program/js/ 		13 KB
5 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/program/js/common.min.js?s=1597086298
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
753efdc34aa0463369369e8beba0129f264d71a02a2035a197599b5faf3889f2

Request headers

:path
/program/js/common.min.js?s=1597086298
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
*/*
cache-control
no-cache
sec-fetch-dest
script
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:04:58 GMT
server
openresty
etag
"3376-5ac8aa177ca80-gzip"
vary
Accept-Encoding
content-type
application/javascript
accept-ranges
bytes
content-length
4889
app.min.js
webmail.web4u.cz/program/js/ 		168 KB
48 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/program/js/app.min.js?s=1597086298
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
e49ef33af7ca609820d8d986f7c908a590993a3671982b68528021331c4e7cfe

Request headers

:path
/program/js/app.min.js?s=1597086298
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
*/*
cache-control
no-cache
sec-fetch-dest
script
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:04:58 GMT
server
openresty
etag
"29fd8-5ac8aa177ca80-gzip"
vary
Accept-Encoding
content-type
application/javascript
accept-ranges
bytes
content-length
48897
jstz.min.js
webmail.web4u.cz/program/js/ 		13 KB
5 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/program/js/jstz.min.js?s=1597086305
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
c9893f911334bfa540b0ab825cc670dfc4dfbdc6030d67e3658b496f5c7d344a

Request headers

:path
/program/js/jstz.min.js?s=1597086305
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
*/*
cache-control
no-cache
sec-fetch-dest
script
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:05:05 GMT
server
openresty
etag
"350a-5ac8aa1e29a40-gzip"
vary
Accept-Encoding
content-type
application/javascript
accept-ranges
bytes
content-length
4929
jquery-ui.min.js
webmail.web4u.cz/plugins/jqueryui/js/ 		254 KB
68 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://webmail.web4u.cz/plugins/jqueryui/js/jquery-ui.min.js?s=1597086297
Requested by
Host: webmail.web4u.cz
URL: https://webmail.web4u.cz/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
81.91.86.29 , Czech Republic, ASN39790 (WEB4U, CZ),
Reverse DNS
webmail.web4u.cz
Software
openresty /
Resource Hash
59a4c9a75c48cf979e66c5641230bda0e15dfff292666e56ffb52a5a96d78834

Request headers

:path
/plugins/jqueryui/js/jquery-ui.min.js?s=1597086297
pragma
no-cache
cookie
roundcube_sessid=e9embipqsglc7d9cki2siin181
accept-encoding
gzip, deflate, br
accept-language
de-DE,de;q=0.9
user-agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
sec-fetch-mode
no-cors
accept
*/*
cache-control
no-cache
sec-fetch-dest
script
:authority
webmail.web4u.cz
referer
https://webmail.web4u.cz/
:scheme
https
sec-fetch-site
same-origin
:method
GET
Accept-Language
de-DE,de;q=0.9
Referer
https://webmail.web4u.cz/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Response headers

date
Wed, 22 Sep 2021 02:34:42 GMT
content-encoding
gzip
last-modified
Mon, 10 Aug 2020 19:04:57 GMT
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Verdicts & Comments Add Verdict or Comment

27 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| onbeforexrselect boolean| originAgentCluster function| $ function| jQuery number| CONTROL_KEY number| SHIFT_KEY number| CONTROL_SHIFT_KEY function| roundcube_browser object| rcube_event function| rcube_event_engine function| rcube_check_email function| rcube_clone_object function| urlencode function| rcube_find_object function| rcube_mouse_is_over function| setCookie function| getCookie object| bw function| rcube_parse_query object| Base64 function| rcube_webmail object| jstz object| rcmail object| bootstrap function| rcube_elastic_ui object| UI function| __newInst

1 Cookies

Domain/Path Name / Value
webmail.web4u.cz/ Name: roundcube_sessid
Value: e9embipqsglc7d9cki2siin181