AquaMail Forum

English - Android => How do I... => Topic started by: slant4 on December 01, 2016, 04:07:22 pm

Title: Help, can't set up email
Post by: slant4 on December 01, 2016, 04:07:22 pm: My brother account works fine but another one for my car club doesn't.. Help http://cloud.tapatalk.com/s/5840206b40d82/Screenshot_20161130-203612.png? (http://cloud.tapatalk.com/s/5840206b40d82/Screenshot_20161130-203612.png?)

Sent from my E6653 using Tapatalk
Title: Re: Help, can't set up email
Post by: slant4 on December 01, 2016, 04:51:30 pm: Not sure if any of this works 😢

Sent from my E6653 using Tapatalk
Title: Re: Help, can't set up email
Post by: StR on December 01, 2016, 04:58:52 pm: The error in that screenshot https://cloud.tapatalk.com/s/5840206b40d82/Screenshot_20161130-203612.png tells that the SMTP server that you are using is refusing connection from you.
Typically, that can mean a few things:
1. You (Aquamail, according to the way you set the SMTP server in it) did not authenticate correctly (or didn't authenticate at all) with the SMTP server.
2. Your mail provider is not accepting mail for clients from a specific IP address/ network (some sort of "black list").

It is hard to advise you on #1 unless you post your settings for the servers (and who your mail provider is).

For #2, - as far as I can tell, you are connecting from the mobile network. Can you try, say, when you are connected to a different network, e.g. via Wi-Fi?
Title: Re: Help, can't set up email
Post by: Kostya Vasilyev on December 03, 2016, 12:06:35 am: Could also have to do with a particular recipient, and the SMTP server trying to look up its MX record -- all during Aqua Mail's trying to submit the message.
Title: Re: Help, can't set up email
Post by: StR on December 03, 2016, 04:15:49 am: Quote from: Kostya Vasilyev, Aqua Mail on December 03, 2016, 12:06:35 am
Could also have to do with a particular recipient, and the SMTP server trying to look up its MX record -- all during Aqua Mail's trying to submit the message.

It could've been, but I don't think it is the case here. I checked the MX records for the destination address. They have nothing to do with the IP in the error message:
Code: [Select]
>nslookup -query=mx aig.com ns1.aig.com Server: ns1.aig.com Address: 167.247.15.89#53 aig.com mail exchanger = 5 fmx31.aig.com. aig.com mail exchanger = 5 fmx34.aig.com. aig.com mail exchanger = 5 fmx36.aig.com. aig.com mail exchanger = 5 lmx31.aig.com. aig.com mail exchanger = 5 fmx35.aig.com. aig.com mail exchanger = 5 lmx35.aig.com. aig.com mail exchanger = 5 lmx36.aig.com. aig.com mail exchanger = 5 lmx34.aig.com. aig.com mail exchanger = 5 fmx33.aig.com. aig.com mail exchanger = 5 lmx32.aig.com. aig.com mail exchanger = 5 lmx33.aig.com. aig.com mail exchanger = 5 fmx32.aig.com.
All those mx hosts are in 167.247 and 167.230 subnets.

Whois for the IP in the error messages shows:

Code: [Select]
% Information related to '178.96.0.0/12AS29328' route: 178.96.0.0/12 descr: T-Mobile UKI suspect, this is the device's IP. That's why I concluded the attempt of connection was from a mobile network.

Actually, - I suspect the SMTP server might be unhappy because the sender's IP does not have a valid reverse DNS record (PTR). Moreover, the DNS servers for that network are configured to deny responses for any 102.178.in-addr.arpa (or 96.178.in-addr.arpa). That's a weird decision for that ISP.
Title: Re: Help, can't set up email
Post by: Kostya Vasilyev on December 04, 2016, 08:21:00 pm: Yes, this could be -- the block belongs to T-Mobile.

If this address isn't NAT-ed, then that address is going to be used by Aqua Mail in the SMTP EHLO.

And then if the SMTP server tries to do a reverse lookup, and it fails... this is what we're seeing I think.