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The format of an email address is local-part@domain, where the local-part may be up to 64 octets long and the domain may have a maximum of 255 octets. [5] The formal definitions are in RFC 5322 (sections 3.2.3 and 3.4.1) and RFC 5321—with a more readable form given in the informational RFC 3696 (written by J. Klensin, the author of RFC 5321) and the associated errata.
If I try to confirm my email address, I get "We could not send your confirmation e-mail. Please check the address for invalid characters and try again.", but the change email screen did not complain and there are no odd characters in my email address. Is there a known problem at this time? Is there any way to get more-detailed information about ...
International email arises from the combined provision of internationalized domain names (IDN) [1] and email address internationalization (EAI). [2] The result is email that contains international characters (characters which do not exist in the ASCII character set), encoded as UTF-8, in the email header and in supporting mail transfer protocols.
encoding of non-ASCII characters in one of the Unicode transforms; negotiating the use of UTF-8 encoding in email addresses and reply codes ; sending the information about the content-transfer encoding and the Unicode transform used so that the message can be correctly displayed by the recipient (see Mojibake).
If you're having problems sending mail, there are a few troubleshooting steps you can take to fix the problem. Restart your computer:. If you haven't shut down your computer in a while, we recommend that you begin troubleshooting by restarting your computer.
The first of these characters or "characters", the replacement character, is forbidden because the MediaWiki software uses the replacement character to represent invalid UTF-8 sequences, and cannot differentiate this use as a placeholder from an actual instance of the replacement character.
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Callback verification can still work if rejecting all bounces happens at the DATA stage instead of the earlier MAIL FROM stage, while rejecting invalid e-mail addresses remains at the RCPT TO stage instead of also being moved to the DATA stage. [2] [3] Servers that accept all e-mail address at RCPT TO stage but reject invalid ones at DATA stage.