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Relaying denied

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Relaying denied

My friend, who is a Comcast customer, tried so send me an e-mail, but got back an error message:

 

Reporting-MTA: dns; resqmta-po-09v.sys.comcast.net [96.114.154.168]
Received-From-MTA: dns; resomta-po-20v.sys.comcast.net [96.114.154.244]
Arrival-Date: Fri, 18 Aug 2017 15:12:44 +0000


Final-recipient: rfc822; xxxxx@xxxxxx.xxx
Diagnostic-Code: smtp; 550 5.7.1 <xxxxx@xxxxxx.xxx>... Relaying denied

Last-attempt-Date: Fri, 18 Aug 2017 15:13:47 +0000

 

I run my own email server and checked the logs, but nothing tried to deliver a message at that time

Does anybody have any idea why two Comcast servers would bring up a 'relaying denied' message

 

Thanks,

 

Gabriel

Email Expert

Re: Relaying denied

Here is some information on that error code---------------

 

https://mailchannels.zendesk.com/hc/en-us/articles/202191674-Fixing-the-550-5-7-1-RBL-Sender-blocked...

 

I would call Comcast security and see if there is a blocking issue----------------------

 

Comcast Customer Security Assurance-------------------

Normal business hours (6:00 am to 2:00 am EST, 7 days a week)

1 - 888-565-4329




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