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how_to:error_message_after_sending_rcptto_-_error_0_-_text_550_5.7.1_relaying_not_allowed_bad_sender_ip_address [2018/11/14 10:45] (current)
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|+||======Error message after sending RCPTTO: - error 0 - text 550 5.7.1 Relaying not allowed! Bad sender IP address======|
|+||If you get this error message from within Webmail, then it usually means that the SMTP service access restrictions are blocking Webmail from sending mail.|
|+||The VPOP3 Webmail service sends mail by sending it to the SMTP service on the address **127.0.0.1**. It can bypass authentication requirements, but if you have set the SMTP service not to allow connections or relaying from the **127.0.0.1** address, then you will get an error such as the above.|
|+||To fix this, in the VPOP3 settings go to ''Services -> SMTP Server''. Go to the ''IP Access Restrictions'' tab and Add a restriction rule like either **Allow | Local Nets** or **Allow | IPv4 | 127.0.0.0 / 8**. Then press the ''Submit'' button.|