Error: invalid sender by SPF from

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arunpa
Posts: 0
Joined: Thu Mar 31, 2016 8:41 am

Error: invalid sender by SPF from

Post by arunpa »

Hi,

Today i faced a strange error as I am not able to send email to one of my client email address. The error I am getting is given below. Is any one can help to sort out this issue?

Error: invalid sender by SPF from x.x.x.x (in reply to RCPT TO
command)
Reporting-MTA: dns; relay.mailchannels.net
Diagnostic-Code: smtp; 554 5.7.1 Error: invalid sender by SPF from
x.x.x.x


John Stanley
Posts: 0
Joined: Wed Sep 28, 2016 10:50 am

Re: Error: invalid sender by SPF from

Post by John Stanley »

Hi,

Sender Policy Framework (SPF) is a specific type of DNS TXT record that identifies which mail servers are permitted to send email on behalf of your domain. The main purpose of an SPF record is to prevent spammers from sending messages with forged From addresses at your domain.

Please make sure if you have properly configured SPF record for your domian. Also, if you are using any email client like outlook, Please check and verify SMTP authentication is enabled on it.

Regards
John


felix

Re: Error: invalid sender by SPF from

Post by felix »

Are you using mailchannel for sending and receiving emails?. From the log you have provided can see mailchannel mention.


arunpa
Posts: 0
Joined: Thu Mar 31, 2016 8:41 am

Re: Error: invalid sender by SPF from

Post by arunpa »

Yes, I am. If there anything need to be done at SPF record according to that?. Please let us know.


felix

Re: Error: invalid sender by SPF from

Post by felix »

Okay, if that so we need to allow mailchannel IPs in our SPF records. Please read through the below article. That explains how we can achieve the same.

https://mailchannels.zendesk.com/hc/en- ... els-Cloud-


arunpa
Posts: 0
Joined: Thu Mar 31, 2016 8:41 am

Re: Error: invalid sender by SPF from

Post by arunpa »

thanks for the info, its worked.


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