capital letter email id

sachin_keluskar · 08-31-2005, 05:04 AM

Hello All,
I am using qmail server. And my qmail server has a valid regiater domain ie. a valid ns pointing. Now the problem is it is working fine but any user from other domain to one of my domain user in capital letters for eg. SACHIN@SOMEDOMAIN.COM then the mail bounce backs saying no valid email address or no recepient found. Ialso tried with sendmail it is working fine sendmail except the message but qmail doesnt.
How to solve this, please help me.

Thanx

Matir · 09-01-2005, 02:06 PM

For the record, email address usernames (not domains) are technically case-sensitive, according to the rfcs. That is, SACHIN != sachin.

From RFC 2821:

Quote:

The local-part of a mailbox MUST BE treated as case sensitive. Therefore, SMTP implementations MUST take care to preserve the case of mailbox local-parts. Mailbox domains are not case sensitive. In particular, for some hosts the user "smith" is different from the user "Smith". However, exploiting the case sensitivity of mailbox local-parts impedes interoperability and is discouraged.

However, qmail should not treat it that way (for interoperability, as mentioned above). The only difference I could imagine might be a locale issue? Though I don't think email addresses should be affected by that either.

Are you using qmail-users?

sachin_keluskar · 09-02-2005, 12:17 AM

If domain is not case sensitive, so i tried sending mail as sachin@SOMEDOMAIN.COM then also the mail bounce back.

Matir · 09-02-2005, 10:07 AM

That's very odd. sachin@somedomain.com works though?