On 3/31/2012 7:36 AM, Jonathan Vomacka wrote: > I thought port 465 SSL was deprecated and replaced with port 587 TLS? > _______________________________________________ CentOS mailing list > CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos from what I read, and what I use.. 25 is the normal smtp port, 587 is an alternative since isps started blocking port 25 smtps uses 465 POPs and IMAPS use the 995 993 regular pop / imap is 110 and 143 or 220 at least my postfix seems to use 465 and the 900s as default for imap,pop, and smtp using encryption.