Event ID: 3003 (A validation error has occurred) [Client Side ...

['

Event

', '

ID:

', '

3003

', '

(A

', '

validation

', '

error

', '

has

', '

occurred)

', '

[Client

', '

Side

', '

-

', '

"Server

', '

communication

', '

error.

', '

Please

', '

refresh

', '

your

', '

browser

', '

and

', '

try

', '

again"

', '

when

', '

composing

', '

or

', '

replying

', '

to

', '

a

', '

message

', '

with

', '

HTML]

', '

SYMPTOMS

', '

When

', '

composing

', '

a

', '

new

', '

message

', '

or

', '

replying

', '

to

', '

a

', '

message

', '

the

', '

following

', '

error

', '

maybe

', '

presented

', '

within

', '

the

', '

browser:

', '

"Server

', '

communication

', '

error.

', '

Please

', '

refresh

', '

your

', '

browser

', '

and

', '

try

', '

again".

', '

Another

', '

symptom

', '

for

', '

this

', '

issue

', '

can

', '

be

', '

in

', '

the

', '

form

', '

of

', '

a

', '

server

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error

', '

in

', '

the

', '

server

', '

application

', '

event

', '

logs

', '

as

', '

follows:

', '

Description:

', '

Event

', '

code:

', '

3003

', '

Event

', '

message:

', '

A

', '

validation

', '

error

', '

has

', '

occurred.

', '

Along

', '

with

', '

the

', '

.NET

', '

error

', '

error

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information

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as

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follows:

', '

Exception

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information:

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Exception

', '

type:

', '

HttpRequestValidationException

', '

Exception

', '

message:

', '

A

', '

potentially

', '

dangerous

', '

Request.Form

', '

value

', '

was

', '

detected

', '

from

', '

the

', '

client

', '

(MsgBody="

', '

s...").

', '

CAUSE

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The

', '

.NET

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framework

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displaying

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an

', '

error

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because

', '

it

', '

detected

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brackets

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within

', '

the

', '

message

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being

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posted

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the

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server.

', '

RESOLUTION

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ValidateRequest

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set

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the

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postback

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validation

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does

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occur.

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disable

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request

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follow

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steps

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within

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installation

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location:

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Enable\\BIN\\NetWebmail\\

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Locate

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following:

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validateRequest="true"

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enableEventValidation="false"/>

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Change

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Alternately

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file

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globally

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webmail

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using.

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example,

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using

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validateRequest:

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validateRequest="false"

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section.

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requestValidationMode="2.0"

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Also

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"validateRequest"

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set

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to

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"false"

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also

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applies.

', '

', '

maxRequestLength="10240"

', '

executionTiemout="3600"

', '

requestValidationMode="2.0"

', '

/>

', '

MORE

', '

INFORMATION

', '

Third

', '

party

', '

script

', '

blockers

', '

may

', '

also

', '

throw

', '

similar

', '

exceptions

', '

and

', '

contribute

', '

to

', '

the

', '

"Server

', '

communications

', '

error".

', '

To

', '

ensure

', '

that

', '

script

', '

blockers

', '

are

', '

not

', '

the

', '

cause

', '

of

', '

the

', '

post

', '

back

', '

validation

', '

problems

', '

in

', '

web

', '

mail

', '

and

', '

causing

', '

the

', '

exceptions

', '

it

', '

is

', '

best

', '

to

', '

disable

', '

the

', '

script

', '

blocking

', '

application

', '

and

', '

test

', '

within

', '

web

', '

mail

', '

again.

', '

Product:

', '

MailEnable

', '

(Std-Any

', '

Pro-Any

', '

Ent-Any)

', '

Article:

', '

ME020512

', '

Module:

', '

WebMail

', '

Keywords:

', '

Server,communication,error,postback,validation,3003,HttpRequestValidationException

', '

Class:

', '

TRB:

', '

Troubleshooting

', '

(Configuration

', '

or

', '

Environment)

', '

Revised:

', '

Friday,

', '

October

', '

6,

', '

2017

', '

Author:

', '

MailEnable

', '

Publisher:

', '

MailEnable

']