1 Topic by djfake

  • djfake
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Topic: gmail doesn't get pop3 mail

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======== Required information ====
- iRedMail version: 0.8.4
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Ubuntu 12.10
- Related log if you're reporting an issue:
====

Gmail is happy to send mail on port 25 via my server, but I cannot get Gmail to collect pop3 mail from my server.
Gmail>Settings>Check mail from other accounts (using POP3):

After setting up for port 110,
Server returned error: "Plaintext authentication disallowed on non-secure (SSL/TLS) connections."
If I choose SSL on port 110
Server returned error: "SSL protocol error. Please try disabling SSL, or contact your other provider to verify the correct port settings."

Suggestions?

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2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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Re: gmail doesn't get pop3 mail

Reference: http://www.iredmail.org/wiki/index.php? … t.STARTTLS

NOTE: Please try to use STARTTLS through port 995 for secure connection if possible.

3 Reply by djfake

  • djfake
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Re: gmail doesn't get pop3 mail

Error from Gmail with port 993/5
"SSL error: unable to verify the first certificate"

openssl s_client -connect host.com:pop3s
returns
"Verify return code: 21 (unable to verify the first certificate)"

Guess it's an ssl issue, with the intermediary certificate?

4 Reply by ZhangHuangbin

  • ZhangHuangbin
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Re: gmail doesn't get pop3 mail

iRedMail generates a self-signed SSL certificate for you by default, you should purchase a SSL certificate from a SSL provider.
You can also try POP3 without TLS/SSL first, but POP3/IMAP over STARTTLS are recommend for better security.

5 Reply by djfake

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Re: gmail doesn't get pop3 mail

Did purchase an ssl cert. Answer was this:
Edit /etc/dovecot/dovecot.conf and enter

"ssl_ca_file = /path/to/your/CA/cert"

restart dovecot service, then check with openssl

"Verify return code: 19 (self signed certificate in certificate chain)"

all better now.

6 Reply by ZhangHuangbin

  • ZhangHuangbin
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Re: gmail doesn't get pop3 mail

Ubuntu 12.x provides Dovecot-2, it doesn't use "ssl_ca_file" anymore, please search "ssl_" in /etc/dovecot/dovecot.conf.

7 Reply by djfake

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Re: gmail doesn't get pop3 mail

^ ???

Yes it does.

8 Reply by ZhangHuangbin

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Re: gmail doesn't get pop3 mail

Sorry, what do you mean? does it work for you now?