[Wylug-discuss] Re: [Wylug-help] Illegal characters in email addresses.

[Jim Jackson]

On Tue, 7 Jun 2005, James Holden wrote:

> Yes, it's legal.
>
> No, not much stuff treats it as such.
>
> Pretty much any printable 7 bit ascii character is legal in a mail address, 
> with hilarious consequences to off-guard developers.

The hairy details are in rfc2822 section 3. Syntax
Not for the faint hearted :-)

>
> James
>
>
> Simon Wood wrote:
>
>> Hi all,
>> I came across an email with a "'" in it.
>> 
>> Looking at RFC2822 it appears to be legal, but when replying to it exim4 
>> kicks up the following error:
>> ---
>> * Connecting to SMTP server: localhost ...
>> [18:48:53] SMTP< 220 slone.mungewell.org ESMTP Exim 4.50 Mon, 06 Jun 2005 
>> 18:48:53 -0600
>> [18:48:53] SMTP> HELO slone.mungewell.org
>> [18:48:53] SMTP< 250 slone.mungewell.org Hello localhost [127.0.0.1]
>> [18:48:53] SMTP> MAIL FROM:<simon at mungewell.org>
>> [18:48:53] SMTP< 250 OK
>> [18:48:53] SMTP> RCPT TO:<simon'stest at localhost>
>> [18:48:53] SMTP< 550 restricted characters in address
>> ** error occurred on SMTP session
>> ** Error occurred while sending the message.
>> ---
>> 
>> What's even more confusing is that it has already passed through exim4 on 
>> the inward journey, see log:
>> ---
>> 2005-06-06 16:36:00 1DfQCO-0000TJ-3F <= Catherine_O'Brien at opusframing.ca 
>> H=localhost (mungewell.org) [127.0.0.1] P=esmtp
>> S=1654 id=fc.000f7cf20013ddad3b9aca009cd41b91.13ddb5 at opusframing.ca 
>> 2005-06-06 16:36:00 1DfQCO-0000TJ-3F => kriszi <krisztina at mungewell.org> 
>> R=local_user T=mail_spool
>> 2005-06-06 16:36:00 1DfQCO-0000TJ-3F Completed
>> ---
>> and then:
>> ---
>> 2005-06-06 17:57:51 H=localhost (slone.mungewell.org) [127.0.0.1] 
>> F=<krisztina at mungewell.org> rejected RCPT <Catherine_O'Brien at opusf
>> raming.ca>: restricted characters in address
>> 2005-06-06 17:57:58 unexpected disconnection while reading SMTP command 
>> from localhost (slone.mungewell.org) [127.0.0.1]
>> ---
>> 
>> Can anyone confirm whether "'" is/is not legal before I file a bug report.
>> 
>> Thanks,
>> Simon.
>> 
>> _______________________________________________
>> Wylug-help mailing list
>> Wylug-help at wylug.org.uk
>> http://mailman.lug.org.uk/mailman/listinfo/wylug-help
>> 
>
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