I use IIS SMTP Pickup directory for my ASP.NET emails. The problem is it goes to recipients' (Yahoo in particular) junk/spam mailboxes. Can anyone help me solve this spam issue?
Reverse DNS is fine. My MX records though point to google since our emails are hosted there. Any clues?
Most likely it's not related to the pickup folder, or anything else on your system. Your MX records might make a difference, having a SPF record can help and even the IP range you're coming from can make a difference. Even the registration length of the
domain can be used to determine legitimacy.
Mails coming from our server are deferred! This is not good. I'm trying to contact Yahoo support to help us out on this.
Great tip on looking up the logs, I totally forgot about this.
What else can I do besides waiting for Yahoo support? Reverse DNS (Check), MX Record (Check), Don't do bulk mail (Check), don't know what else is possible. Domain Keys perhaps?
edtee
4 Posts
Emails sent from pickup directory are recognized as SPAM
Feb 15, 2008 06:50 AM|LINK
I use IIS SMTP Pickup directory for my ASP.NET emails. The problem is it goes to recipients' (Yahoo in particular) junk/spam mailboxes. Can anyone help me solve this spam issue?
Reverse DNS is fine. My MX records though point to google since our emails are hosted there. Any clues?
jeff@zina.co...
3379 Posts
MVP
Moderator
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 15, 2008 12:18 PM|LINK
Most likely it's not related to the pickup folder, or anything else on your system. Your MX records might make a difference, having a SPF record can help and even the IP range you're coming from can make a difference. Even the registration length of the domain can be used to determine legitimacy.
Jeff
edtee
4 Posts
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 15, 2008 03:31 PM|LINK
I'll try adding another MX record to our host name and see how it goes.
jeff@zina.co...
3379 Posts
MVP
Moderator
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 15, 2008 08:04 PM|LINK
Check the SMTP logs and see what the connection to Yahoo is doing.
Jeff
edtee
4 Posts
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 16, 2008 04:22 AM|LINK
Mails coming from our server are deferred! This is not good. I'm trying to contact Yahoo support to help us out on this.
Great tip on looking up the logs, I totally forgot about this.
What else can I do besides waiting for Yahoo support? Reverse DNS (Check), MX Record (Check), Don't do bulk mail (Check), don't know what else is possible. Domain Keys perhaps?
qbernard
5016 Posts
MVP
Moderator
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 16, 2008 04:24 AM|LINK
I think you got most covered, also check if your server is blacklisted by spamcop etc
Bernard Cheah
edtee
4 Posts
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 16, 2008 04:38 AM|LINK
It's not listed so we should be fine (technically).
Is it possible to do DomainKeys in IIS?
qbernard
5016 Posts
MVP
Moderator
Re: Emails sent from pickuo directory are recognized as SPAM
Feb 16, 2008 05:29 AM|LINK
DomainKeys ? doubt so with IIS SMTP.
Bernard Cheah