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i cant send to gmai...
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i cant send to gmail users

New Member

i need help please, i get this reply always any time i mail gmail


I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
                  The mail system
    gmail-smtp-in.l.google.com[26071a] said: 550-5.7.26 This
    message does not have authentication information or fails to 550-5.7.26
    pass authentication checks. To best protect our users from spam, the
    550-5.7.26 message has been blocked. Please visit 550-5.7.26
    5.7.26 information. b21si65812vsr.59 - gsmtp (in reply to end of DATA
Topic starter Posted : 02/06/2021 6:04 am
Hasan Aboul Hasan
Prominent Member

Hi friend, this means your SMTP has bad reputation or you have a blacklist or so

Posted : 02/06/2021 7:17 am
Mohammad Riyaduzzaman Riyad
Trusted Member

Hi friend,

I'm afraid that maybe your sending reputation is less than good. Have you fixed all records such as SPF, DKIM, DMARC, rDNS, BIMI, Google Postmaster, MX, etc?

What was your sending score before running the campaign? Have you warmed up your server? What is the blacklist status of your domain/ip?

Posted : 02/06/2021 10:55 am
New Member

@vetriyad am trying to verify domain on google postman but its not verying it says it cant see the code

Topic starter Posted : 18/06/2021 9:18 am