When you send an outgoing message to a mailing list, the list recipients do not receive the message.
This problem occurs when the From header or Reply-To header in the outgoing message uses an e-mail address from a free e-mail provider (for example, Gmail, Hotmail, or Yahoo). Spammers often use this technique to send spam, so messages that do so are blocked.
To resolve this issue, you must ensure that the From header and Reply-To header in your messages use e-mail addresses for which you have direct control (in other words, that use your domain name).
Additionally, messages submitted to your mailing list should use the mailing list address itself as the Reply-To address. Many e-mail providers block messages where a list member’s e-mail address is the Reply-To address.
To configure these settings, follow these steps:
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