ip blocked, email returned
we are having problems sending emails to  sbcglobal.net domains seems our server is blacklisted.i can assure that we don't do spam and the server is free of virus and/or any other threat. can you help us whit this situation unblocking our ip? message:@sbcglobal.net    host ff-ip4-mx-vip1.prodigy.net [144.160.159.21]    smtp error from remote mail server after mailfrom::    553 5.3.0 flph828 dnsbl:rbl 521 104.218.50.252 \_is\_blocked.for assistance forward this email to @abuse-att.net
hi there @adsoma
we understand that you are unable to send emails out.  according to that posting that you have sent, there is an email that you need to forward that email message to.  that email address is: abuse\_rbl@abuse-att.net, and they will review your request and they will support you. 
 
thank you for your patience in this matter.
 
matthew, at&t community specialist
In the server configuration document, in the Router/SMTP section, tab Restrictions and controls|SMTP Outbound controls, there is a parameter ‘Allow messages only from the following Notes addresses to be sent to the Internet:’. List the allowed names there, to prevent the others from sending mail to the Internet. are you still forwarding dns requests to the old isp's dns servers?  that could slow things down...

 switch to google (8.8.8.8) or opendns (208.67.222.222 and 208.67.220.220) and see if that helps any, or find the dns servers for your new isp. The question is can you get out of your computer and after that the thing to check is can you resolve any domain names. Try going to a command prompt and checking to see if you can ping your computers IP address then the gateway then try to resolve domain names.


ipconfig /all


Will give you the information you need to check these things.


nslookup google.com


If that does not come back with a IP address then you have problems with your DNS server. Send an email to us at [[email protected]](/cdn-cgi/l/email-protection#adcec2c3d9ccced9edc4d9cec5c8df83cec2c0) and we'll be happy to help. Dear Jay Nelish


Your Question is incomplete


is the specific system is not on Network? its might be a problem discovered last year, that system ping but not share any data, or cannot access the system


you click on start menu and then click on run  

type serivces.msc  

and run the computer browser service, Remote Procedure call service, Server, and Client service


and your problem will resolved  

but actually this is because of virus change your antivirus program and scan your system wtih updated A/V in this case you can try simply rebooting your home router, if not at home please contact your network administrator.

failing this try using alternative dns -

[image]

[how to enable faster dns resolution on windows 10](https://www.000webhost.com/forum/t/how-to-enable-faster-dns-resolution-on-windows-10/118671) [tutorials](/forum/c/tutorials)

this is a windows based tutorial so if you r… try checking if your mail server can actually be reached from your discourse server. easiest way to do that would be to run ./discourse-doctor

nb: what happens if you remove the smtp authentication string from the configuration and rebuild? sorry i took so long to respond on this post. i’ve had a busy week! so i found the issue. in my template for endpoints i realized i accidentally set them to provision using the external ip address of my pbx. changed it to internal and this fixed my issues :stuck\_out\_tongue: it’s generic. it’s good or bad. i got the same email before getting hired at google. it could also be a rejection. good luck! we can’t, i am sorry. send an email from the same email address that was associated with your account to 
support(/@)[cloudflare.com](http://cloudflare.com) 
the trust and safety team will take care of it, but be prepared to answer a lot of questions. 
meanwhile you could change the nameservers for your domain back to those…