If you're testing, test from an address that's different from your endpoint address.
If you're testing, test from an address that's different from your endpoint address.


is4.7.0 suspicious due to the very low reputation of the sending domain.
So if [...]".Sender"?Sender set to bob.johnson@example.com, all I'm asking for is example.com.Unknown error: transient error (421): 4.7.0 [xxx.xxx.xxx.xxx xxx] Gmail has detected that this message is4.7.0 suspicious due to the very low reputation of the sending domain. To4.7.0 best protect our users from spam, the message has been blocked. For4.7.0 more information, go to4.7.0 https://support. google.com/mail/answer/188131 m14-20020a17090a2c0e00b0029c6cf7e90dsi263235pjd.20 - gsmtpUnknown error: transient error (421): 4.7.0 [104.30.8.37 19] Gmail has detected that this message is4.7.0 suspicious due to the very low reputation of the sending domain. To4.7.0 best protect our users from spam, the message has been blocked. For4.7.0 more information, go to4.7.0 https://support.google.com/mail/answer/188131 g191-20020a81a9c8000000b00610b4579248si2814075ywh.311 - gsmtpSo if [...]SenderSenderbob.johnson@example.com