We're doing a "try-out" of SmarterTools SmarterTrack (help desk) software. We can't get it to send email. We showed someone at SmarterTools our log - SmarterTrack keeps its own SMTP log - and they said it's because we're using IPv6, which SmarterTrack doesn't support.
This is a web server. We have several websites that send email through Classic ASP or PHP apps. (Our company email is handled elsewhere.) We run SQL Server 2008 R2 and My SQL, SQL Back-up Pro, and currently, that's about it. The server is accessed through Remote Desktop.
I found a Microsoft "Fix it" patch to turn off IPv6 entirely, but I'm not sure of the repercussions of that.
Is there a way to force ONLY SMTP to use IPv4?
Or barring that, will I break anything by disabling IPv6 entirely?
The "Fix It" that we're looking at is at http://support.microsoft.com/kb/929852
ETA - An example of the SMTP log from SmarterTrack:
20:36:49 Connecting to fe80::a4ff:551:c90a:e8b8%11:25
20:36:49 Connection to fe80::a4ff:551:c90a:e8b8%11 failed
20:36:49 Ending delivery of C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\df7cf54a2191485582b7f24167f32644.eml
20:50:40 Queuing C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\93634452198f401897d6e76ad01eb0d5.eml for delivery
20:50:40 Starting C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\93634452198f401897d6e76ad01eb0d5.eml delivery
20:50:40 Starting delivery of C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\93634452198f401897d6e76ad01eb0d5.eml
20:50:40 Connecting to fe80::a4ff:551:c90a:e8b8%11:25
20:50:40 Connection to fe80::a4ff:551:c90a:e8b8%11 failed
20:50:40 Ending delivery of C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\93634452198f401897d6e76ad01eb0d5.eml
20:52:32 Queuing C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\13a244d8a3a54cd78e8fb4c9f7dbe965.eml for delivery
20:52:32 Starting C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\13a244d8a3a54cd78e8fb4c9f7dbe965.eml delivery
20:52:32 Starting delivery of C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\13a244d8a3a54cd78e8fb4c9f7dbe965.eml
20:52:32 Connecting to fe80::a4ff:551:c90a:e8b8%11:25
20:52:32 Connection to fe80::a4ff:551:c90a:e8b8%11 failed
20:52:32 Ending delivery of C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\13a244d8a3a54cd78e8fb4c9f7dbe965.eml
21:11:47 Queuing C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\1132e874f101459eac3a8820811028d9.eml for delivery
21:11:47 Starting C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\1132e874f101459eac3a8820811028d9.eml delivery
21:11:47 Starting delivery of C:\Program Files (x86)\SmarterTools\SmarterTrack\MRS\App_Data\Spool\Out\1132e874f101459eac3a8820811028d9.eml