Also, since Gmail SMTP does not use port 25, I've yet to see an ISP that won't allow me to send mail through it." Thanks, David! What do you think so far? Be the first to post a comment.

Is Google planning on updating the certificate for smtp.gmail.com port 465? I noticed that it's expiring today which could cause a lot of issues with email clients sending email today and tomorrow.

The certificate problem caused issues for new users trying to send email via Gmail or Google Apps using SMTP.

David Gewirtz takes a time out from breaking and fixing things to show you how seemingly unrelated configuration changes can have a ripple effect.

port 587 protocol smtp auth on from [email protected] user [email protected] tls on tls_starttls on # this next line is crucial: you have to point to the correct security certificate for GMail.