However, if I try to send an email to that same SG email address, it bounces. It comes back to me with a refusal-to-send email:
- Code: Select all
The original message was received at Thu, 8 Jan 2015 15:25:00 +1300
from 121-73-136-230.cable.telstraclear.net [121.73.136.230]
----- The following addresses had permanent fatal errors -----
<XXXXX.XX.XXX@xoxy.net> [Note: censored because this is the secret SG email]
(reason: 550 X-Host-Lookup-Failed: Reverse DNS lookup failed for 219.88.242.52 (failed))
----- Transcript of session follows -----
... while talking to gourmet7.spamgourmet.com.:
>>> MAIL From:<XXXmyrealaddressXXX@orcon.net.nz> SIZE=1192 [note: censored because I don't want to make this address public, but it is an orcon email address]
<<< 550 X-Host-Lookup-Failed: Reverse DNS lookup failed for 219.88.242.52 (failed)
554 5.0.0 Service unavailable
The address which is rejected 121.73.136.230 is my own ISP (the one sending the test email to my SG address). It works fin when my gmail friend sends a message - could it be that SG has blacklisted my ISP or is using some kind of DNS check that fails to verify my ISP is legitimate?
I have also contacted my ISP who are looking into the issue, although it's kind of difficult communicating to them given the extra complications of SG masking etc.