Why can’t I send email to some addresses from my instance?
Hello.
I'm trying to send email from my instance using PHP/Apache (or even sendmail directly), and for some recipients it always fails.
It works fine for yahoo mail, and gmail.
However, I haven't been able to get it to work for several other domains.
Here is an example log from an attempt I just made (by calling sendmail directly with logging, but the same thing happens with an apache page):
Is this something to do with DNS relating to my virtual server? Are the cloud servers black listed by some ISPs? Has anyone else seen this? Where does "domU-12-31-36-00-09-94.z-1.compute-1.internal" come from and how can I change it?
I'm trying to send email from my instance using PHP/Apache (or even sendmail directly), and for some recipients it always fails.
It works fine for yahoo mail, and gmail.
However, I haven't been able to get it to work for several other domains.
Here is an example log from an attempt I just made (by calling sendmail directly with logging, but the same thing happens with an apache page):
Oct 19 12:40:53 domU-12-31-36-00-09-94 sendmail[4074]: l9JGer8g004074: to=silikon@alumni.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30015, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (l9JGerB2004077 Message accepted for delivery) Oct 19 12:41:00 domU-12-31-36-00-09-94 sendmail[4079]: l9JGerB2004077: to=<silikon@alumni.com>, ctladdr=<root@domU-12-31-36-00-09-94.z-1.compute-1.internal> (0/0), delay=00:00:07, xdelay=00:00:07, mailer=esmtp, pri=120385, relay=alumni-com.mr.outblaze.com. [208.36.123.17], dsn=5.1.1, stat=User unknown Oct 19 12:41:00 domU-12-31-36-00-09-94 sendmail[4079]: l9JGerB2004077: l9JGf0B2004079: DSN: User unknown |
Is this something to do with DNS relating to my virtual server? Are the cloud servers black listed by some ISPs? Has anyone else seen this? Where does "domU-12-31-36-00-09-94.z-1.compute-1.internal" come from and how can I change it?
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