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Not able to send emails out via outlook or mail on mac ip is not permitted to send

user234234
New Poster

Not able to send emails out via outlook or mail on mac ip is not permitted to send

Emails are coming in fine.

Not able to send emails out. Web brower works fine.

Email clients are not working.


I'm getting this message: ip 40.132.71.16 is not permitted to send messages. I test this on several computers on same network and same issue.

user234234
New Poster

Re: Not able to send emails out via outlook or mail on mac ip is not permitted to send

ComcastCSAEmail
Official Employee

Re: Not able to send emails out via outlook or mail on mac ip is not permitted to send

@user234234 can you please PM me the email you are having issues with? im seeing the IP 40.132.71.16 belonging to Windstream Communications LLC, which is hitting a 554 SMTP error.

http://postmaster.comcast.net/smtp-error-codes.php#554

554 - [PTR lookup failure] Comcast requires all sending mail server IP addresses have a valid PTR record set up. This error results when the lookup failed.

NXDOMAIN response. One of the authoritative servers for the relevant section of the in-addr.arpa DNS tree is saying that there is no PTR record for the given IP address.


If this is in fact a third party hosted domain, then you will want to engage your email administrator/host. If it is not, then your email client is misconfigured. 


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