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cpg1.5.48 Security release - upgrade mandatory!
The Coppermine development team is releasing a security update for Coppermine in order to counter a recently discovered vulnerability. It is important that all users who run version cpg1.5.46 or older update to this latest version as soon as possible.

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Author Topic: Your Forums 'activation' email fails 'Sender Address Verification'  (Read 17802 times)

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When I was attempting to register for the boards, my host which has implemented Postfix SAV would not accept your web form which had an invalid 'MAIL FROM' in the SMTP Envelope:

Dec  6 14:05:28 mx3 pf-in/smtpd[82014]: NOQUEUE: reject: RCPT from[]: 554 5.1.7 <>: Sender address rejected: undeliverable address: host[] said: 550 Unknown user (in reply to RCPT TO command); from=<> to=<MY_EMAIL_ADDRESS> proto=ESMTP helo=<>

Your verification email has the envelope (SMTP Session, not header) MAIL FROM of

However your MX server responds 550 Invalid user when attempting to validate that address.

I had to beg my ISP to whitelist your revdns ([]), but it would be much simpler if your MAIL FROM where a valid mailbox, even if you had it delivering to |>dev/null

Joachim Müller

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Re: Your Forums 'activation' email fails 'Sender Address Verification'
« Reply #1 on: December 07, 2009, 08:29:21 am »

You're right. Thanks for the report.

I will quote your message in a new thread on a dev-only board and we'll try to come up with a solution. Thanks again.

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