-3
votes
3answers
139 views

How long are the default times for greylisting? [closed]

In Wikipedia it sais: A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate the originating server ...
2
votes
1answer
506 views

Some emails are being delivered, some returned

I have my own VPS where a site is running (control panel: directadmin). When I send mails, some are being delivered (hotmail, gmail, me@somedomain.com ,...), others are not (me@somedomain2.com), ...
1
vote
3answers
272 views

What's the ideal greylist scheme with multiple MX in different locations?

We currently have two MX servers in the same physical rack, they are sharing the same greylist database, and everything seems to work well. The two MX have different priorities and they are on two ...
0
votes
1answer
86 views

Greylisting with two mail servers

I have two mail servers and would like to make use of greylisting, but am not sure if this simply works with two servers. E.g. when a sender gets greylisted and uses the second server for the second ...
0
votes
2answers
876 views

avoid greylisting with postfix

I have an email marketing app, so we have a great volume of mails to send and sometimes a great volume to the same MX. Depending the MX configuration we enter in a greylist and the server told us (in ...
1
vote
4answers
673 views

How long does it take for a server to get 'off greylisting'

I asked a question regarding email delays a few months ago, and I think I found a workaround. I changed our email from "noreply@site.com" to "someone@gmail.com", and it seems to work instantly ...
0
votes
1answer
557 views

Exim log and send all mail for a given domain through another server

I administer a handful of shared web hosting servers. Recently, Yahoo has been deprioritizing/greylising all email sent from these servers. I am getting the dereaded 421 4.7.0 [TS02] Messages from ...