2
votes
2answers
17 views

Sending mail from sub-domain on different server from domain getting flagged as spam

Our client owns a server with a domain: website.com We have a server that our client points videos.website.com to. Emails sent from videos.website.com are getting flagged as spam because website.com ...
4
votes
6answers
554 views

Are SPF needed for domains that do not send mails and do not have MX record?

I have some domains registered that do not send mails. I have totally removed MX record for these domains on my DNS. Is it still useful to set an SPF record in order to avoid spammer to send mails ...
9
votes
10answers
2k views

Using fake MX records to combat spam

I have a client that is getting heavily spammed.. it's the 15th of the month and POP3 bandwidth is almost 100 GB (yes GB..lol!) there are only 7 e-mail account on this domain. I installed SpamAssassin ...
3
votes
6answers
3k views

Hotmail and Live.com rejecting all emails

I have been having problems sending emails from my server to hotmail.com and live.com email addresses. I have read other posts on serverfault but they have not been helpful. Here is the error message. ...
2
votes
4answers
208 views

Does sending e-mail in the name of customers increase the risk of being marked as spammer?

We are developing a SaaS website application that lets users send invoices to their clients. Ideally, these e-mails should appear to be originating from our customers, so the sender e-mail address ...
20
votes
4answers
3k views

Best Practices for preventing you from looking like a spammer [duplicate]

I'd like to feel more confident setting up mail for my clients with regards to false positives. Here's what I know: SPF records are good, but not every spam filter service/software (SFSS) uses ...