net.curiousprogrammer.smtp
Primitive smtp client. For now, just enough functionality to be able to verify email recipients.
TODO: this is work in progress and doesn't work apart from JDK 8. Alternative solution based on commons-net package might be implemented later.
Primitive smtp client. For now, just enough functionality to be able to verify email recipients. TODO: this is work in progress and doesn't work apart from JDK 8. Alternative solution based on commons-net package might be implemented later.
check-recipient!clj
(check-recipient! mail-host mail-from mail-to)Checks whether mail-to is a valid email address, presumably an existing recipient,
at given mail-host email server (presumably found via MX record for mail-to email domain).
Uses mail-from as 'MAIL FROM', otherwise it couldn't issue the 'RCPT TO' command.
Returns a map with :valid? true or false depending on the result of the check.
If :valid? is false, then also returns :error key with detailed error message.
See https://mailtrap.io/blog/550-5-1-1-rejected-fix/ for more details about 550 smpt errors.
Checks whether `mail-to` is a valid email address, presumably an existing recipient, at given `mail-host` email server (presumably found via MX record for `mail-to` email domain). Uses `mail-from` as 'MAIL FROM', otherwise it couldn't issue the 'RCPT TO' command. Returns a map with `:valid?` true or false depending on the result of the check. If `:valid?` is `false`, then also returns `:error` key with detailed error message. See https://mailtrap.io/blog/550-5-1-1-rejected-fix/ for more details about 550 smpt errors.
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