1 Topic by NewMaiSET

  • NewMaiSET
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  • Registered: 2019-10-28
  • Posts: 1

Topic: he server response was: 5.1.0 : Sender address rejected: User unknown

If i try to send email using a php script via smtp with username , password and existing senderid the email goes but of i change sender's id which does not have email it gives me follwing message :

the server response was: 5.1.0
: Sender address rejected: User unknown in virtual mailbox table

How can I allow any sender's addresses without having to setup a mail box or vmail box  ?

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2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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  • Registered: 2009-05-06
  • Posts: 31,091

Re: he server response was: 5.1.0 : Sender address rejected: User unknown

NewMaiSET wrote:

i change sender's id which does not have email it gives me follwing message :

Are you sending spams? Why do you need to send as a non-existing address?