Comments on: Relaying Postfix SMTP via smtp.gmail.com

By: deepak george

deepak george — Fri, 13 Jan 2012 13:41:05 +0000

Thank you

By: zeev

zeev — Fri, 30 Dec 2011 17:22:09 +0000

Worked like a charm.

Thank you

By: arazortech

arazortech — Sun, 16 Oct 2011 17:23:10 +0000

Thanks for the article! worked perfectly. After struggling with sendmail, this was like a breath of fresh air.

By: sandip

sandip — Sat, 03 Sep 2011 17:00:30 +0000

Hey, i am final year engg. student. My project is “Knowledge discvovery in corporate email”.

I will have two computer(gmail user and server) in internet network resembling corporate network.
I am postfix mail server on second computer.

It has 3 steps:
1. intercept employee email
2. Perform processing on email body content at server using python.
3. If content is not revealing any company secrets , forward it to gmail server.
4. If found guilty , raise alert on server and do not forward email.

Please , let me know how to do following:

–> postfix server listen to other computer in network
–> is any certificate required to forward message to gmail smtp server. If yes, Is it free and how to obtain certificate.

My email addr is : sandy_patel91yahoo.in

By: JiDai

JiDai — Tue, 28 Jun 2011 09:57:46 +0000

Thanks, you saved my life

By: Rob Izor

Rob Izor — Thu, 02 Jun 2011 03:45:05 +0000

I had a LOT of trouble getting gmail smtp to work on Debian Lenny. I had untrusted certificate problems which I thought were rectified by adding the latest Equifax certificate. But I kept getting a warning:

warning: SASL authentication failure
no mechanism found

blah, blah. At this point I was no longer getting the untrusted logs in mail.log.

So I eventually found this link:
http://serverfault.com/questions/211749/sending-mail-from-postfix-via-gmail-unable-to-get-local-issuer-certificate-cert

apt-get install libsasl2-modules

And like MAGIC, it started sending my email to gmail smtp server!!! Hopefully this helps others find this solution faster!

By: Francesc Rosàs

Francesc Rosàs — Fri, 27 May 2011 09:26:06 +0000

Just found that instead of creating /etc/postfix/cacert.pem you can simply use

smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt

At first I tried to use this

smtp_tls_CApath = /etc/ssl/certs

don’t know why but it didn’t work.

BTW, it has the advantage that you don’t have to do anything when Google changes its certificates

By: mrreload

mrreload — Tue, 17 May 2011 22:58:32 +0000

Using the same config as Micheal M but I get “lost connection with smtp.gmail.com[74.125.93.109] while receiving the initial server greeting”
Does anyone have any idea how to resolve this?

By: Alex

Alex — Fri, 08 Apr 2011 13:24:32 +0000

@ Alex

Oh and don’t forget to

sudo postmap sasl_passwd
sudo postmap tls_per_site

Again, unrelated, but HTH someone

By: Alex

Alex — Fri, 08 Apr 2011 13:05:29 +0000

Ubuntu 10.10

For thoes who have just installed postfix for the first time, you’ll also need to do

mkfifo /var/spool/postfix/public/pickup

And restart – I know its not directly related to the post above, but thought I’d put it in here for completeness