darkage - 9:23 pm on Jan 10, 2012 (gmt 0)

I run 2-3 large sites/domains, each on a separate VPS.

Each VPS/domain then uses it's local sendmail to outbound email (also used for bulk outbound email, such as newsletters). For inbound email I typically buy a mail server and hook it up via a webmail app hosted on my VPS.

In summary: outbound mail via local sendmail on VPS and inbound mail via mail server that I buy as a separate service.

Now due to the recession I can see that there is a lot of money to be saved by merging the 3 VPS' into a large cloud VPS or dedicated server.

However I am unsure how to deal with the mail issue. Since sendmail (when setup correctly) can only send mail from one domain, how would I deal with one VPS hosting multiple domains/sites that all need to send outbound mails ?

How do you guys do it ?

Thank in advance for help.