All of our shared hosting plans can support the sending of email through the default SMTP port – 25, and the alternative SMTP port – 587.
An increasing number of broadband providers like Smart, Magnet, Vodafone, and parts of Eircom’s network are putting restrictions on port 25 on their customers. This means you typically have to send email out through their outgoing mailserver instead of ours. This won’t be noticeable on the receiving side at all.
If you regularly change broadband provider, or don’t want to use your broadband provider’s mailserver, you can try port 587 however there is nothing to stop Internet Service Providers from putting similar restrictions on this port also. We have specifically seen some customers on parts of Eircom’s network being restricted on both port 25 and 587.