On 12/12/2012 12:44 PM, J Gao wrote: > Hi, all, > > My question may be OT but I'd like ask here so please forgive me. > > I have a mail server use postfix/courier and few of our users report > having problem if they use Gmail to retrieve emails from my server. > I googled and it seems Gmail is tighten up its security. The are > people have the same problem: > http://productforums.google.com/forum/#!topic/gmail/uPP9EsiY1rA > > So I am looking for a solution now. Questions I'm having are: > 1. How much cost me to purchase a trusted SSL just for the POP3/SMTP > server? > 2. Any recommendation for where to purchase? > > > Thanks for help. > > Gao >
Any of the inexpensive SSL certificates should work fine. Look on google for providers. I've used rapidsslonline, but there's probably 50 other firms selling certificates for less than $20/year. Make sure you get a "server" certificate, not a "personal" certificate. A "Linux/Apache" certificate should work fine for any *nix service such as IMAP or SMTP, and you can reuse the same certificate for all services on the same server. -- Noel Jones