All Questions
155
questions
0
votes
1
answer
203
views
How to improve sender score for personal mail server
Background:
I have an own domain and an own mail server that sends out the mail for this domain. The users are only my family so there are less than 10 users with probably 20 mails sent per day.
...
- 1,013
-1
votes
1
answer
2k
views
How to fix spam listing of IP due to SMTP HELO banner
Spamhaus has listed my IP a few times for an apparent problem. They are indicating:
A device using <ipv6 addr> is infected with malware and is emitting spam.
<ipv6 addr> is making SMTP ...
- 169
2
votes
2
answers
1k
views
What exactly can I conclude from "High scoring spam message has been dropped (in reply to end of DATA command)"?
I operate a web site that offers user registrations. Users get automatic registration success e-mails, sent through a professional e-mail hosting company (not directly from our own server). This has ...
- 153
1
vote
1
answer
76
views
Outbound email restriction
We have a project to set up around 5,000 plus email IDs for an educational institution. Emails are meant mostly for receiving mails, and the instituition wants to set up some rule that no email id can ...
- 685
0
votes
1
answer
371
views
How to stop spammer spoofing my domain for emails
I've scanned all my code and even changed the passwords to my google apps account such that the SMTP password has changed. However, spammers are still sending emails from June24-eBay-USA-contactmsg-...
- 302
0
votes
2
answers
500
views
Configure Postfix external relay for UCEPROTECTL3 rejection
Is it possible to configure MTA Postfix server to bypass UCEPROTECTL3 rejection ?
Example when my server connect to recipient server then I get information:
Diagnostic-Code: smtp; 554 5.7.1 You are ...
- 51
0
votes
0
answers
18
views
My postfix is used for spamming [duplicate]
I need your help.
My postfix is sending spam mails.
I checked my main.cf and it should be fine.
In the following a snippet of my mail.log
Jan 3 22:35:41 mail postfix/pickup[104179]: 866352963F01: uid=...
- 1
2
votes
0
answers
102
views
Exim: Redirect mails without spooling
I am running a personal mail server using exim that only forwards mails (and also runs a few mailman mailing lists).
Unfortunately, my server’s spam protection is worse than that of the mail provider ...
- 4,069
0
votes
1
answer
750
views
Provider for outgoing mail from own Postfix server
I've been running Postfix on my own dedicated server (hosted by Hetzner) for years, however, it's getting increasingly difficult get outgoing mail to Outlook/Hotmail and sometimes Google delivered. ...
- 145
1
vote
0
answers
555
views
Yahoo Mail server constantly deferring mail from my server "due to user complaints"
I have a 100% no-spam score on mail tester.
Have no problem with Gmail server, all users getting my emails.
Have everything like SPF and other spam related criteria enabled.
Yet, Yahoo mail server ...
- 111
0
votes
2
answers
2k
views
How to REJECT email using SpamAssassin
Is it possible to reject emails, like it is done in Postfix using header_checks, using SpamAssassin? Normally, the SpamAssassin only adds the spam flags and by default adds the word SPAM in the ...
- 179
2
votes
2
answers
8k
views
How to read this DMARC report? Why does Yahoo still reject mails from my server?
I've got hMailServer set up on my server, which bulks-mails a newsletter to an opt-in subscriber base. I have set up DKIM signing, a SPF record explicitly giving my server permission to send email on ...
- 273
-3
votes
1
answer
146
views
Does anti spam software block IP addresses of large smtp providers? [closed]
Does anti spam software routinely block IP addresses of large smtp providers such as Mailchimp or SalesHandy?
- 133
0
votes
0
answers
41
views
What email headers are useful for determining if my email account has been compromised?
I've recently received a lot of spam replies (automated replies from users, and rejections from mail servers) to a certain email address. I've taken the obvious precautions of changing passwords, and ...
- 365
0
votes
1
answer
219
views
Best way to restrict/manage PHP apps to use my postfix?
I want to allow PHP apps to send mail but under very restricted conditions.
And I don't want to allow sendmail-like command for PHP apps (I'm using chrooted PHP and it's too much headache), thus I ...
- 597