Troubleshooting Postfix Authentication to Relay
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This is obviously where we are failing, but why is the question:
host east.exch083.serverdata.net said: 530 5.7.1 Client was not authenticated (in reply to MAIL FROM command) -
is this a valid from?
from=[email protected] -
@Dashrender said in Troubleshooting Postfix Authentication to Relay:
is this a valid from?
from=[email protected]They claim that valid from is not needed. Supposedly.
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@scottalanmiller said in Troubleshooting Postfix Authentication to Relay:
@Dashrender said in Troubleshooting Postfix Authentication to Relay:
is this a valid from?
from=[email protected]They claim that valid from is not needed. Supposedly.
I changed the sending domain, now we are getting unknown mailbox.
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If we try to send to a mailbox outside of the domain, we get authentication errors again.
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Odd thing with outlook is that you can email to users outside the domain, but a simple test email to yourself fails. so:
to: [email protected] from: [email protected] works, but
to: [email protected] from: [email protected] does not work
to: [email protected] AND [email protected] from: [email protected] - message gets sent outside, but not to me -
@Mike-Davis it's very strange all around.
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is there some sort of anti-spoofing settings with Intermedia? We use Mimecast here and Mimecast blocks any email from outside with a from address of "ourdomain.com" by default with their Anti-Spoofing policy.
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@jt1001001 said in Troubleshooting Postfix Authentication to Relay:
is there some sort of anti-spoofing settings with Intermedia?
That's probably what is going on. I was working with their support last night and they said they couldn't transfer me to a level 2 tech because I wasn't listed on the account. This tech also told me that they allow anonymous emails on port 25, so I knew I was working with the wrong guy.
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@Mike-Davis said in Troubleshooting Postfix Authentication to Relay:
@jt1001001 said in Troubleshooting Postfix Authentication to Relay:
is there some sort of anti-spoofing settings with Intermedia?
That's probably what is going on. I was working with their support last night and they said they couldn't transfer me to a level 2 tech because I wasn't listed on the account. This tech also told me that they allow anonymous emails on port 25, so I knew I was working with the wrong guy.
Yes, bottom line here is that Intermedia is incompetent. Which has been a question for a long time - why would anyone use Intermedia when Office 365 does the same stuff for lower cost but has Microsoft themselves backing it?
