I know this is kind of an old thread, but I recently wrote a patch for my customers that will allow you to send mail through SMTP when using b2. This is mainly because we block the php mail() function from sending mail as nobody, but also because as you said some ISP's disregard mail sent using the mail function.

I just released it on my website for public use since we started using suPHP, so feel free to us it if you find it'll help you:

http://www.v-nessa.net/2007/08/08/b2evolution-smtp-patch/

Thanks for replying to this.

In case anyone was wondering, I went to the phpclasses.org site and downloaded the Easy Email SMTP class (and required classes) and modified b2evo to send emails through that (one set of files needed).

Once I did, all was well...

Thank you both for reporting to the forum. This solves one of those problems that comes around from time to time.

OK, anyone wanting to integrate this into b2evo 2.0 and maintain it a while, please email me ;)

I'll work on this for b2evo 2.0....what kind of integration are we talking about here =)

nessa, you may want to patch your package and maybe use another library. The last released PHPMailer package is still vulnerable (which means it's not supported/developed) anymore.

See http://larholm.com/2007/06/27/phpmailer-security-updates/

i was thinking about swiftmailer, as i agree that phpmailer is more of a deprecated solution. I'll see what I can do for this