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Feature #11629
openImplement Enhanced Mail System Status Codes (rfc1893)
Status:
Open
Assignee:
-
Target version:
-
Description
Here is a list of exceptions raised by net/smtp.rb
def exception_class
case @status
when /\A4/ then SMTPServerBusy
when /\A50/ then SMTPSyntaxError
when /\A53/ then SMTPAuthenticationError
when /\A5/ then SMTPFatalError
else SMTPUnknownError
end
end
When the server responds with Net::SMTPServerBusy: 401 4.1.3 Bad recipient address syntax
it raises SMTPServerBusy
where it could use the enhanced information and throw a more specific error such as BadMailboxAddressSyntax
based on what the RFC says:
X.1.3 Bad destination mailbox address syntax
The destination address was syntactically invalid. This can
apply to any field in the address. This code is only useful
for permanent failures.
Then it would be easier for the client to catch such specific exceptions and handle them properly instead of dealing with more general ones.
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