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Trying to use postfix with smtp to connect to google's smtp. When trying to send mail, I get this error:

Sep 15 14:04:41 zedsaid postfix/smtp[20271]: certificate verification failed for smtp.gmail.com[]:587: untrusted issuer /C=US/O=Equifax/OU=Equifax Secure Certificate Authority
Sep 15 14:04:42 zedsaid postfix/smtp[20271]: warning: SASL authentication failure: No worthy mechs found
Sep 15 14:04:42 zedsaid postfix/smtp[20271]: 1BACD968B23: to=<nic@zedsaid.com>, relay=smtp.gmail.com[]:587, delay=0.92, delays=0.06/0.03/0.83/0, dsn=4.7.0, status=deferred (SASL authentication failed; cannot authenticate to server smtp.gmail.com[]: no mechanism available)

Running Debian 4.0.


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Post the output of postconf -n and all other relevant configuration files of Postfix. You don't seem to have smtp_sasl_password_maps configured in your main.cf. –  joschi Sep 18 '10 at 5:50

2 Answers 2

up vote 1 down vote accepted

It looks like the clue is right here:

untrusted issuer /C=US/O=Equifax/OU=Equifax Secure Certificate Authority

you need to get the equifax cert and add it to your list of trusted CA certs.

I think that these are available here: http://www.geotrust.com/resources/root-certificates/

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Possibly multiple problems here, the certs being one and another maybe related to smtp_sasl_security_options. I once solved a problem involving that "no mechs" message by setting smtp_sasl_security_options=noanonymous following a clue found on linuxquestions.org

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What is the suggested solution? –  sebix Jan 8 at 22:31

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