Forum Discussion
421 4.2.0 sender rejected AUP#SNDR
I manage a few mail servers for my employer. We noticed that we are being blocked by T-Mobile (relay=tmo-east.mx.a.cloudfilter.net). We send a lot of messages to our customers' SMS gateway addresses ...
Maybe it's time to switch to Verizon.. their offer for $30 a line for 4 lines for new users is tempting plus a credit to bringing your own phone. Hmmmm
