When emailing a particular email address you may receive a bounce back that contains the following error messsage:
Reason: Remote host said: 554 5.7.1 The message from (<firstname.lastname@example.org>) with the subject of (RE: Sample Message Subject) matches a profile the Internet community may consider spam. Please revise your message before resending.
This generally means that something in the content of the message has triggered the recipients spam filter. When this happens, your options are:
- Revise the content of your message to be less "spammy"
- Have the recipient whitelist your email address or domain