Replies to all replies:
Richard asks:
is the "domain you control" on the same machine as the form submission site?
Yes.
was this machine recently upgraded to 5.5? [the 5.5 upgrade included sendmail and as a result could have had an impact on your sendmail.cf (depending on what your sendmail.mc looked like).]
No.
In general, the place to start is the maillog on the site with the form.
Here are what the logs have to say:
@400000004bf6cfc4383bc65c delivery 6217: deferral: CNAME_lookup_failed_temporarily._(#4.4.3)/ @400000004bf6cfc4383c5eb4 status: local 0/10 remote 0/255 @400000004bf6d51e34d61d8c starting delivery 6218: msg 97881531 to remote suzieprogrammer@gmail.com @400000004bf6d51e34d6449c status: local 0/10 remote 1/255 @400000004bf6d51e37303e14 starting delivery 6219: msg 97881555 to remote suzieprogrammer@gmail.com @400000004bf6d51e373078ac status: local 0/10 remote 2/255 @400000004bf6d51e373143cc delivery 6218: deferral: CNAME_lookup_failed_temporarily._(#4.4.3)/ @400000004bf6d51e373241b4 status: local 0/10 remote 1/255 @400000004bf6d51e37807d0c delivery 6219: deferral: CNAME_lookup_failed_temporarily._(#4.4.3)/ @400000004bf6d51e3780bf74 status: local 0/10 remote 0/255
Mark asks:
Sounds like your MTA isn't getting out to the 'Net. Could a firewall rule have been changed somewhere?
No. I've been able to get email to the account I control through the same firewall.
Do try to telnet to port 25 for google mail, and see if it'll talk to you, or if you can get through at all.
I've never been able to successfully do that, but the same form gets the email to the address I control.
Whit asks:
Do you know that it's going out with valid headers, a "legal" helo
address,
and the like? Many mail systems will use these as reasons to reject connections when they're wrong. In the case of bad helo values, often it won't get as far as the spam filter, since that's sent through before the message.
Yes. It goes through qmail, and everything worked before.
If stuff worked before but now doesn't, another question is whether your sending IP is in a range recently blacklisted, if your ISP has been
hosting
spammers.
I checked the blacklists and all looks well.
Akemi asks:
Which MTA are you using? sendmail, postfix, ...
qmail
Mr. Gabriel asks:
Also, do you use srv records? Has anything here changed?
Don't use srv
TIA, Susan