I am having an issue with @att.net and @sbcglobal.net emails. I found myself blocked from sending to these domains. A very nice ATT Representative unblocked my IP for me. Thank goodness kind Sir.
Going through the config file I have noticed Domain Throttling. I want to be sure I have the right setting before my next mailing. I am hoping that this will slow sending to matching domains a bit.
define('USE_DOMAIN_THROTTLE', 1); define('DOMAIN_BATCH_SIZE', 1); define('DOMAIN_BATCH_PERIOD', 10);
Does this look correct?