Github user olegz commented on a diff in the pull request: https://github.com/apache/nifi/pull/871#discussion_r75180197 --- Diff: nifi-nar-bundles/nifi-email-bundle/nifi-email-processors/src/main/java/org/apache/nifi/processors/email/smtp/SmtpConsumer.java --- @@ -149,7 +149,7 @@ public void done() { } attributes.put("smtp.helo", context.getHelo()); - attributes.put("smtp.remote.addr", context.getRemoteAddress().toString()); + attributes.put("smtp.src", context.getRemoteAddress().toString().substring(1)); --- End diff -- Not sure why we need ```substring(1)``` here? Both ```toString()``` and ```substring(..)``` can cause exceptions (i.e., NPE and IndexArrayOutOfBound). I'll put a null check and remove ```substring```. Basically if at some point any formatting would be required for the address we have processors that could do that down stream.
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