CiviCRM Community Forums (archive)

Our host limits outbound SMTP to 300/day on our shared server. They have opened port 20095 for us. And want to know if our SMTP traffic is going to violate that limit. We plan to send 1500 emails 3 times a month, but assume the actual traffic is from the CiviSMTP server. Can you provide a definitive answer so we can put these worries to rest? TIA

Thanks Leyla,

I have updated our support ticket with our host, asking for confirmation. I hope we don't have to transfer to another host!

I'm now curious about how the civiSMTP service works. I thought civiMail sent civiSMTP one copy of the newletter (XML, CSS, content, attachment(s), etc.) with a list of headers (or something), and then the server did all the mailing, and sent back bounces, etc. via SOAP. Now I wonder if two servers aren't being used for one mailing? And if that is a fair assessment, what is the advantage of resending via civiSMTP?

Don't misunderstand my tone as confrontational, I just wish to have a better understanding than I had from the diagram.

Thanks Hershel,

Can you provide the advantage of that? It does not solve the issue with most shared account SMTP limits and transfer rates.

With some hosts it will not solve the problem, but most hosts that limit outgoing email only limit use of their own SMTP servers. Using an external SMTP server will have no limit, on those hosts.

...also, integrating with civiMail as opposed to using and maintaining the web app mailing list is advantageous, but is that it?

I don't understand what you are asking here.