local part may contain equal sign

[pommi]

I'm using ​ezmlm-idx mailing list software. When confirming a subscription you have to send an email to an address in this format:

listname-sc.1234567890.key-mylocalpart=mydomain.tld@listdomain.tld

Sending this e-mail fails with the error:

Invalid e-mail address: <email>

The problem is the equal sign (=). According to ​Wikipedia the equal sign is a valid character in the local-part.

Attached is a patch to resolve this issue when sending an e-mail to an address with an equal sign in the local-part. But I found a couple of different regex-es for detecting/validating e-mail addresses, so I think this patch is not enough to fix the problem completely.

[alec]

Fixed in [d7a5dfa2].

[pommi]

Replying to pommi:

But I found a couple of different regex-es for detecting/validating e-mail addresses, so I think this patch is not enough to fix the problem completely.

Attached is a patch for program/include/rcube_string_replacer.php to detect the local part like in program/include/main.inc around line 1591.

[alec]

Fixed in [27a96a40]. When we implement IDNA, we'll need to change the regexp to support emails with unicode characters.