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FAQ: Why does eXchange WALL's event log report 550 (no relay) errors when sending messages to the Internet?
Internet Service Providers restrict who is allowed to send through them. If you are seeing error entries describing 550 errors
in the event log
this may be due to your ISP's SMTP server not recognizing you as a valid sender.
ISPs use one of two authentication methods. See the following FAQs for more details:
 Does eXchange WALL support SMTP Authentication?
My ISP requires POP3 login before allowing messages to be sent. Does eXchange WALL support this?
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| © 2003 Kinesphere Corporation. All rights reserved. |
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