[TYPO3-dev] TYPO3 4.5.2. and email validation issue

[Jigal van Hemert]

Hi,

On 11-4-2011 16:45, Krystian Szymukowicz wrote:
> www.example.com <somebox at example.com>
>
> Does RFC822 forbiddes to use dots in the "name " ?
> I've read RFC822 but can not find the answer.

RFCs are all about defining things and combining definitions:

4.1 defines for example the from header as:
"From" ":" mailbox

6.1 defines a mailbox as:
mailbox = addr-spec / phrase route-addr
addr-spec = local-part "@" domain
route-addr = "<" [route] addr-spec ">"

3.3 defines phrase as:
phrase = 1*word
word = atom / quoted-string
quoted-string = <"> *(qtext/quoted-pair) <">
qtext = <any CHAR excepting <">, "\" & CR, and including linear-white-space>

The rest you can lookup yourself.

In short a mailbox can be an address:
	somebox at example.com
or a name followed by the address between <>:
	name <somebox at example.com>

The name can consist of all characters except ()<>@,;:\".[] space and 
character 0-31,127. If these are part of the name it must be embedded in 
double quotes. Any problems can be solved by escaping characters with a 
backslash (for example a double quote inside the name).

Because your name part contained dots the name should have been quoted.

Many mail clients somehow seem to handle malformed mail headers, but 
I've also seem bug reports which were caused by dots or spaces in the 
name part.
With t3lib_htmlmail you have to take care of these details yourself. I 
you use t3lib_mail_Message (the interface for Swift Mailer in TYPO3 4.5) 
you don't have to think about which characters to quote or escape.

-- 
Kind regards / met vriendelijke groet,

Jigal van Hemert.