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how_to:sending_mail_failing_with_an_error_about_a_blank_sender_or_sender [2013/07/18 16:38] – paul | how_to:sending_mail_failing_with_an_error_about_a_blank_sender_or_sender [2018/11/14 10:45] (current) – external edit 127.0.0.1 | ||
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- | ======Sending mail failing with an error about a blank sender====== | + | [[https:// |
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- | In the SMTP protocol, a blank sender email address has a special meaning. It means that you do **not** want to receive bounce messages. This is useful with automated messages. For instance, you do not want to receive bounce messages in response to another bounce message | + | |
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- | Unfortunately, | + | |
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- | These Internet providers may refuse to accept messages from mail serve autoresponders or bounce messages. | + | |
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- | =====Solution===== | + | |
- | To get around this problem you have to tell VPOP3 not to work correctly, and not to use null return paths in the places it should be doing. To do this, go to Mail Connectors -> Mail Senders -> Advanced Relay Settings. Set the **Change NULL return addresses to** setting to another address. You have to be **//very careful//** what address you set this to. It must be a valid email address which will **never** have an autoresponder, | + | |
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- | (Ideally, you should complain to your ISP and get them to change their policy on null return paths, since there is absolutely no benefit to them blocking these messages). | + | |
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