Postfix/Yahoo/SMTP Connection timed out

[Red Paint]

Hi All,

Looking for a little advice. We seem to be blocked by yahoo but I can't find anywhere online that provides a method of requesting to be unblocked:

Aug 2 05:01:30 plesk postfix/smtp[32030]: connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out
Aug 2 05:01:30 plesk postfix/smtp[32030]: ED64E6694E: to=<r**4@yahoo.co.uk>, relay=none, delay=242195, delays=242165/0.02/30/0, dsn=4.4.1, status=deferred (connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out)
Aug 2 05:06:30 plesk postfix/smtp[30755]: connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out
Aug 2 05:06:30 plesk postfix/smtp[30755]: 960F26884A: to=<n**s@yahoo.co.uk>, relay=none, delay=309573, delays=309543/0.02/30/0, dsn=4.4.1, status=deferred (connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out)
Aug 2 05:06:30 plesk postfix/smtp[30754]: connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out
Aug 2 05:06:30 plesk postfix/smtp[30753]: connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out
Aug 2 05:06:30 plesk postfix/smtp[30754]: 2619B62386: to=<g**y@yahoo.co.uk>, relay=none, delay=193666, delays=193636/0.06/30/0, dsn=4.4.1, status=deferred (connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out)
Aug 2 05:06:30 plesk postfix/smtp[30753]: AB25C665DF: to=<c**5@yahoo.co.uk>, relay=none, delay=126501, delays=126471/0.09/30/0, dsn=4.4.1, status=deferred (connect to mx-eu.mail.am0.yahoodns.net[188.125.69.79]:25: Connection timed out)

This is just a tiny example of all the delayed emails.

I can't ping mx-eu.mail.am0.yahoodns.net and it looks like we might have been blacklisted but our IP comes back clean on all the automated RBL's we've tried.

There are a couple of other timeouts for apparently non-yahoo addresses:
Aug 2 05:26:29 plesk postfix/smtp[4114]: connect to hmrc.co.uk[195.171.114.178]:25: Connection timed out
Aug 2 05:26:29 plesk postfix/smtp[4114]: B8B886A023: to=<no-reply@hmrc.co.uk>, relay=none, delay=312205, delays=312175/0.03/30/0, dsn=4.4.1, status=deferred (connect to hmrc.co.uk[195.171.114.178]:25: Connection timed out)

Can anyone suggest how we might go about fixing this?

Many thanks

 

[InderS]

Hello,

It's seems that your have blocked your outbound port 25. Please check this port and tried to disabled your firewall and confirm port 25 is enabled for your server from your DC

 

[Red Paint]

Hello,

It's seems that your have blocked your outbound port 25. Please check this port and tried to disabled your firewall and confirm port 25 is enabled for your server from your DC

Don't think so, other emails are being delivered fine:

Aug 2 12:15:03 plesk imapd: IMAP connect from @ [::ffff:188.*.*.*]INFO: LOGIN, user=*@*.co.uk, ip=[::ffff:188.*.*.*], protocol=IMAP
Aug 2 12:15:03 plesk postfix/smtp[19093]: 7828061C76: to=<a*n@*.com>, relay=remote.*.com[188.*.*.*]:25, delay=1.1, delays=0.3/0/0.31/0.5, dsn=2.6.0, status=sent (250 2.6.0 <000c01ce8f71$886c2bf0$994483d0$@*.co.uk> Queued mail for delivery)

 

[Red Paint]

Here is another successful email delivery - something else must be going on.

Aug 2 12:21:51 plesk postfix/smtpd[9459]: 5294A62011: client=unknown[31.*.*.*], sasl_method=PLAIN, sasl_username=*@*.co.uk
Aug 2 12:21:53 plesk postfix/cleanup[9552]: 5294A62011: message-id=<8mxdx5f0of3tvlbxj2keo591.1375442504083@*.com>
Aug 2 12:21:53 plesk postfix/qmgr[22084]: 5294A62011: from=<*@*.co.uk>, size=1277, nrcpt=1 (queue active)
Aug 2 12:21:59 plesk postfix/smtp[17221]: 5294A62011: to=<*@*.com>, relay=remote.*.com[188.*.*.*]:25, delay=8.3, delays=2.6/0.02/5.3/0.38, dsn=2.6.0, status=sent (250 2.6.0 <8mxdx5f0of3tvlbxj2keo591.1375442504083@*.com> Queued mail for delivery)
Aug 2 12:21:59 plesk postfix/qmgr[22084]: 5294A62011: removed

 

[InderS]

Ohh, Yes your mails are working fine that means your port 25 is not blocked. Have you checked your mail server IP blacklist status? Maybe your IP is blacklisted in some spam Database. You can check it through following URL

http://mxtoolbox.com/blacklists.aspx
http://www.dnsbl.info/

 

[Red Paint]

Hi InderS,



That was the first thing I did. No results in either for our IP address.

Any other ideas?

 

[Red Paint]

Does anyone know from the information above if I'm being blocked by Yahoo or if something else is going on?

Many thanks