In fact, a common outgoing mail server like Gmail’s or Yahoo’s is not designed to support bulk mailings and always set a limit to the number of recipients that you can handle per message.
This should be consistent with your MX record. In box A you should put whatever hostname your mailserver is on ( or ).
WHAT ARE THE COMCAST EMAIL SERVER SETTINGS HOW TO
One last thing: if you need to send a mass or multiple email (like a newsletter) you should choose a professional SMTP server to ensure the best delivery rate. Re: configuration setting how to with comcast. Below you will find a list of the most popular SMTP and POP hostnames: and for all other information about how to set them up, you can check this article.
(This in particular is for the SMTP or outgoing mail server settings). Normally an email server settings configuration window looks like that: More in detail, the SMTP server is in charge of the email delivery process, while the POP server takes care of the final pick-up of the message by the recipient (downloading it on her client). To edit existing Account Settings, select the email account and click Change (skip to step 5) Check the Manually configure settings or additional server types box and click Next.
Know more about Comcast Mail Imap and Pop server settings. From the Tools menu, select Account Settings. A quick guide on how to change, update, manage and setup Comcast email settings for Windows, Android, Outlook and iPhone. To configure a mail client (like Outlook or Thunderbird) it’s necessary to know your email server settings: that is, both the POP and SMTP parameters of your email account, and some other information concerning the port number you want to use, the authentication process etc. Outlook settings for gotHosting sending from Comcast.