Hi All, I'm new around here and it's my first post, sorry if I'm breaking some post rules.

I'm developing a website for a client, which is almost complete and it's currently live, it has a few hundred users and it's growing fast. But we detected some problems with the email deliverability of its server.
It looks like the website is delivering emails to Yahoo! accounts after a few hours of sending those messages. And sometimes the messages arrive to the junk folder or don't arrive at all.

We contacted the hosting but they are a bit narrow-minded and state that the problem is not theirs / they don't know what to do / we must contact Yahoo!, which sounds like a response from someone who is not interested in helping us.

I'm a Senior web developer but I'm not very much of a server guy. Only know the basics of linux, and server configuration, and after spending a few days looking for a solution to this problem, the client got impatient and I suggested him to hire an email expert who might solve the problem without a lot of research. He agreed on that and now I'm looking for a person/company who can provide the following services:

-correct the email infrastructure of the server in order to improve reputation.
-make sure that there are no delays between the moment that the website sends the email and the moment that email arrives to the account.
-provide support for the development team on email deliverability matters.

If anyone knows about emails (or knows somebody who knows... :) ) Please contact me.
Thanks in advance.
Cris.

The IP number (blacl-listed), the lack of reverse dns, the like of x-mailer headers within the email are all things that can prevent mail from being delivered.

Hi Colbyt, thanks for your response!

I'm not trying to solve the problem myself since the client doesn't want me to spend another day on this issue and he's looking for some expert who can improve overall deliverability and give our domain a better reputation by building a better server infrastructure. That is a task that would take me months to complete since I'm a complete newbie if it comes to server configuration.

If you can refer to me somebody who offers this service, I'll contact him.

Thanks again.

Cris.

If this is shared hosting the only things you can control are scripting issues.

The black-listing and reverse dns are features the server admin has to deal with. Some hosts are better than others and any host can get black-listed for a short period of time if a user on the machine does something stupid and SPAMS.

Get a php person familar with the latest revisions to the email standards (the acronym escapes me at the moment) to make sure yours scripts are in compliance.

I do not know anyone.