how-to block ads
AT&T Midwest/Ameritech FAQ »Does ameritech block any ports? (Update 08/16/2005)) - and this may extend to other areas over time.
3. Cap Issues
If you feel you are being blocked you should first check your own firewalls or routers. You can then try the Telnet test found here: »AT&T Midwest/Ameritech FAQ »The Telnet Test for SMTP Server Connectivity
If you find Port 25 is blocked by SBC you can follow the instructions in this document: »AT&T Midwest/Ameritech FAQ »Here's what to do if port 25 is blocked for you
Download caps are as follows: 192, 384, 768, 1536 and 6000. Technically they are 192-384, 384-1536, 384-768, 384, 192 interleaved, 384 interleaved, 1536-6044
However, some lines are inadvertently capped and can support full service speed. In order to determine if your line will support either a higher cap or having the cap lifted call ASI. See the phone list.