550 Sender verify failed Tag

What causes “Sender verify failed” SMTP mail error, and how to resolve it in DirectAdmin Exim servers

by Visakh S | Oct 25, 2014 | DirectAdmin, Technical Support

SMTP error from remote mail server after RCPT TO:<user2@domain2.com>: host mx.server.com [xxx.xxx.xxx.xxx]: 550-Verification failed for <user1@domain1.com> 550-No Such User Here 550 Sender verify failed If you are a DirectAdmin web host, you would...

What causes “Sender verify failed” SMTP mail error, and how to resolve it in DirectAdmin Exim servers

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