<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>I seem to recall a lot of mail servers will block your mail as spam if the dns record is <86400 (24hr). Also there are lists of dynamic ranges that your address may be in and cause your mail to be blocked. Not having a reverse DNS entry will also cause some of your email to be blocked as spam. This is all for outgoing mail, so you may be able to get around it by routing all your outgoing mail through the Comcast SMTP server, but y<span style="font-size: 12pt; ">ou probably want to get the static IP or use a mail host.</span><div><br></div><div>Scott<br><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Robert" <rs@ale.spam.futz.org><br><b>To: </b>ale@ale.org<br><b>Sent: </b>Wednesday, August 1, 2012 12:09:42 PM<br><b>Subject: </b>[ale] comcast business + mail server = static ip?<br><br>I've just had comcast business class installed, and I want to move my<br>mailserver over to it. However, I'm being cheap and trying not to pay the<br>extra $15/mo for a static ip. I think I've read that their dhcp addresses<br>rarely change.. I can monitor it, and use dns update to tweak my ip if it<br>changes... with a 4hour ttl, I don't expect to miss much, if any, mail if the<br>ip changes..<br><br>what concerns me more is that the reverse dns will be comcast's<br>c-x-x-x-x.hsd1.ga.comcast.net... I know that technically reverse dns doesn't<br>have to match the mail server's name, but some other servers might be too<br>picky about it.. so I was wondering if anyone with comcast business class is<br>running a mailserver using their assigned dhcp address? If so, have you had<br>any issues?<br><br>Robert<br>_______________________________________________<br>Ale mailing list<br>Ale@ale.org<br>http://mail.ale.org/mailman/listinfo/ale<br>See JOBS, ANNOUNCE and SCHOOLS lists at<br>http://mail.ale.org/mailman/listinfo<br></div><br></div></div></body></html>