Be sure that your messages are written in plain text, without hidden codes, html, or attachments, and that they do not copy (usually with ">" at the beginning of each line) the message you are responding to. The mailing program considers a message that includes anything other than plain text a possible virus or advertising spam and will reject it.

Also, when writing your messages, please use the same courtesy that you would show when speaking face-to-face with someone. Flames, insults, and personal attacks will not be tolerated. It's fine to disagree strongly with opinions, ideas, and facts, but always with respect for the other person. Great minds do not always think alike, and that's where the fun is!