Larry Seltzer of eWeek, whom I have great respect for and usually agree with, wrote this article on dealing with spam using the controversial tactic of blocking all outbound port 25 access.? The logic ...

Suddenly, yesterday, I couldn't send email anymore. My primary email address is through my domain, hosted by phpwebhosting. Although I could still retrieve my email, I could no loger connect to the ...

when telneting into mail servers on port 25 some servers even if they are not an open relay will let you enter commands. on other smtp servers they accept the connection but the screen is blank and ...