Sometimes mailing list members fail to receive messages sent through cPanel’s Mailman system. This issue usually occurs when the message headers are not configured correctly.
Problem
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You send a message to a mailing list (e.g.,
newsletter@example.com). -
Recipients do not receive the message.
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Other non‑list e‑mail messages are delivered normally.
Cause
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The From or Reply‑To header in the outgoing message uses an address from a free e‑mail provider (e.g., Gmail, Hotmail, Yahoo).
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Many mail servers block such messages because spammers often forge free provider addresses.
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Additionally, if the Reply‑To header points to a list member’s personal address, some providers will reject the message.
Resolution
To fix this, configure the mailing list to rewrite headers so they use your domain’s address:
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Log in to cPanel.
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On the Tools page, in the Email section, click Mailing Lists.
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Under Current Lists, locate the list → click Manage.
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In the Mailman admin interface, go to General Options.
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Under General list personality:
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Locate Details for from_is_list → select Munge From.
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This rewrites the
From:header to use the mailing list’s address.
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Under Reply‑To: header munging:
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Set first_strip_reply_to → Yes.
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Set reply_goes_to_list → This list.
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Click Submit Your Changes.
Notes
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